Audi A5 in version 8T was produced in the years 2007 – 2016. The following table presents information about batteries that match each of the engines available on the market.
Basic parameters of batteries suitable for Audi A5 (2007-2016):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Audi A5 8T – petrol engines:
- 1.8 TFSI (118kW)
- 2.0 TFSI
- 2.0 TFSI quattro
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 08 | 74 Ah 680 A | 278x175x190 mm | More |
| Bosch S5 S50 08 | 77 Ah 780 A | 278x175x190 mm | More |
| Exide Excell EB740 | 74 Ah 680 A | 278x175x190 mm | More |
| Exide Premium EA770 | 77 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard HCB 096 | 76 Ah 680 A | 278x175x190 mm | More |
| Lucas Premium LP096 | 75 Ah 680 A | 278x175x190 mm | More |
| Lucas Supreme LS096 | 78 Ah 780 A | 278x175x190 mm | More |
| Varta Blue Dynamic E11 | 74 Ah 680 A | 278x175x190 mm | More |
| Varta Silver Dynamic E44 | 77 Ah 780 A | 278x175x190 mm | More |
For the Audi A5 8T manufactured from 2007 to 2016 with petrol engines such as the 1.8 TFSI (118kW) without Start-Stop, 2.0 TFSI without Start-Stop, and 2.0 TFSI quattro without Start-Stop, the choice of a suitable battery is crucial for ensuring reliable vehicle performance. These engines do not require the more advanced AGM or EFB batteries that are designed for Start-Stop systems, which means a standard lead-acid battery is sufficient and appropriate.
The most compatible battery group for these specific engine variants includes models with a standard case size of 278mm in length, 175mm in width, and 190mm in height, as well as a layout with the positive terminal on the right (layout 0) and terminal type 1. The batteries feature a B13 fixing system, which matches the original mounting requirements of the Audi A5 8T. Capacity for these batteries typically ranges from 74 Ah to 78 Ah, and the cold cranking amperage (CCA) varies from 680 A up to 780 A, providing ample starting power for the petrol engines even in colder climates.
Within this recommended group, suitable options include the Bosch S4 S40 08 (74Ah, 680A), Bosch S5 S50 08 (77Ah, 780A), Varta Blue Dynamic E11 (74Ah, 680A), Varta Silver Dynamic E44 (77Ah, 780A), Exide Premium EA770 (77Ah, 760A), Exide Excell EB740 (74Ah, 680A), Halfords Standard HCB 096 (76Ah, 680A), Lucas Supreme LS096 (78Ah, 780A), and Lucas Premium LP096 (75Ah, 680A). All these batteries meet the physical and electrical requirements for the engines listed and ensure proper fitment and performance in the vehicle.
Audi A5 8T – petrol engines:
- 1.8 TFSI (118kW) – with Start-Stop
- 2.0 TFSI – with Start-Stop
- 2.0 TFSI quattro – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 08 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK700 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK720 | 72 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard AGM 096 | 70 Ah 720 A | 278x175x190 mm | More |
| Halfords Advanced AGM 096 | 70 Ah 760 A | 278x175x190 mm | More |
| Lucas Fusion AGM LF096 | 70 Ah 760 A | 278x175x190 mm | More |
| Varta Silver Dynamic AGM E39 | 70 Ah 760 A | 278x175x190 mm | More |
For the Audi A5 8T equipped with petrol engines featuring Start-Stop technology, specifically the 1.8 TFSI (118kW) Start-Stop, 2.0 TFSI Start-Stop, and 2.0 TFSI quattro Start-Stop, battery requirements are more demanding compared to non-Start-Stop variants. These engines are designed to frequently restart as part of the efficiency system, which places greater stress on the battery. Therefore, only AGM (Absorbent Glass Mat) batteries are suitable, as they are engineered to handle the increased cycling and deeper discharges associated with Start-Stop operation.
The appropriate batteries for these Start-Stop engines share the same dimensions as standard units—278mm in length, 175mm in width, and 190mm in height—with a layout of positive terminal on the right (layout 0), terminal type 1, and B13 mounting configuration. However, a key difference lies in the battery technology and performance parameters. The recommended AGM batteries offer capacities of 70 to 72 Ah and a cold cranking amperage of 720 to 760 A, which ensures reliable starting power while supporting the frequent engine restarts required by the Start-Stop system.
Among the most suitable AGM batteries for these engines are the Bosch S5 AGM S5A 08, Varta Silver Dynamic AGM E39, Exide AGM EK700 and EK720, Halfords Advanced AGM 096 and Standard AGM 096, and Lucas Fusion AGM LF096. All these options provide the necessary power reserves and durability for Start-Stop operation and are fully compatible with the physical and electrical requirements of the Audi A5 8T with these petrol Start-Stop engines. Choosing any battery from this group ensures optimal performance, longevity, and continued functionality of the Start-Stop system.
Audi A5 8T – petrol engines:
- 2.0 TFSI – with Start-Stop
- 2.0 TFSI quattro (165kW) – with Start-Stop
- 3.0 TFSI quattro – with Start-Stop
- S5 quattro – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 11 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK800 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK820 | 82 Ah 800 A | 315x175x190 mm | More |
| Halfords Advanced AGM 115 | 80 Ah 800 A | 317x175x190 mm | More |
| Lucas Fusion AGM LF115 | 80 Ah 800 A | 315x175x190 mm | More |
| Varta Silver Dynamic AGM F21 | 80 Ah 800 A | 315x175x190 mm | More |
For the higher-output petrol engines in the Audi A5 8T range, namely the 2.0 TFSI Start-Stop, 2.0 TFSI quattro (165kW) Start-Stop, 3.0 TFSI quattro Start-Stop, and the S5 quattro Start-Stop, battery requirements are even more specialized due to increased electrical demands and the presence of advanced Start-Stop technology. These engines, especially the quattro and S5 variants, draw more current and require enhanced starting power, making it essential to select batteries that combine robust capacity with the ability to withstand deep cycling and frequent restarts.
The recommended batteries for these engines are exclusively AGM (Absorbent Glass Mat) types, specifically designed for vehicles with Start-Stop systems and heavy electrical loads. The best-suited batteries feature a larger case size—315mm in length, 175mm in width, and 190mm in height—which is compatible with the battery compartment of these Audi A5 8T models. These batteries are configured with the positive terminal on the right (layout 0), terminal type 1, and use the B13 mounting system to ensure secure installation and fitment.
With a nominal capacity of 80 to 82 Ah and an impressive cold cranking amperage of 800 A, these AGM batteries are equipped to provide consistent and powerful engine starts, even in challenging conditions, while supporting all electronic systems. Among the top choices are the Bosch S5 AGM S5A 11, Varta Silver Dynamic AGM F21, Exide AGM EK800 and EK820, Lucas Fusion AGM LF115, and Halfords Advanced AGM 115. Each of these batteries offers the necessary durability and performance for the demanding requirements of these high-output, Start-Stop-equipped Audi engines. Opting for one of these AGM batteries ensures reliable operation, optimal Start-Stop system performance, and the electrical stability needed for the advanced features found in these models.
Audi A5 8T – petrol engines:
- 1.8 TFSI (125kW)
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 13 | 95 Ah 800 A | 353x175x190 mm | More |
| Bosch S5 S50 13 | 100 Ah 830 A | 353x175x190 mm | More |
| Exide Excell EB950 | 95 Ah 800 A | 353x175x190 mm | More |
| Exide Premium EA1000 | 100 Ah 900 A | 353x175x190 mm | More |
| Halfords Standard HCB 019 | 95 Ah 850 A | 353x175x190 mm | More |
| Lucas Premium LP019 | 95 Ah 800 A | 354x175x190 mm | More |
| Lucas Supreme LS019 | 100 Ah 850 A | 354x175x190 mm | More |
| Varta Blue Dynamic G3 | 95 Ah 800 A | 353x175x190 mm | More |
| Varta Silver Dynamic H3 | 100 Ah 830 A | 353x175x190 mm | More |
For the Audi A5 8T with the 1.8 TFSI (125kW) petrol engine without Start-Stop, the battery requirements differ slightly due to the higher power output and electrical demands of this particular engine variant. These engines do not utilize Start-Stop technology, so there is no need for AGM or EFB batteries—standard lead-acid batteries are both suitable and recommended. However, to support the increased power requirements, batteries with higher capacity and cold cranking amperage are preferred.
The ideal batteries for the 1.8 TFSI (125kW) without Start-Stop are those with a larger case size, typically measuring around 353-354mm in length, 175mm in width, and 190mm in height. All options in this group feature the positive terminal on the right side (layout 0), terminal type 1, and utilize the B13 mounting system, which corresponds perfectly to the original design of the Audi A5 8T’s battery compartment. In terms of electrical specifications, these batteries offer a capacity from 95Ah up to 100Ah and cold cranking amperage ranging from 800A to as high as 900A, ensuring reliable starting performance and the ability to handle intensive electrical loads.
Among the most suitable choices for this engine are the Bosch S4 S40 13 (95Ah, 800A), Bosch S5 S50 13 (100Ah, 830A), Varta Blue Dynamic G3 (95Ah, 800A), Varta Silver Dynamic H3 (100Ah, 830A), Exide Premium EA1000 (100Ah, 900A), Exide Excell EB950 (95Ah, 800A), Halfords Standard HCB 019 (95Ah, 850A), Lucas Supreme LS019 (100Ah, 850A), and Lucas Premium LP019 (95Ah, 800A). Each of these batteries meets the physical and technical requirements for the 1.8 TFSI (125kW) engine, providing the necessary power, reliability, and fit for optimal operation in the Audi A5 8T.
Audi A5 8T – petrol engines:
- 3.2 FSI
- 3.2 FSI quattro
- RS 5 quattro
- S5 quattro V8
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 13 | 95 Ah 850 A | 353x175x190 mm | More |
| Bosch S5 S50 15 | 110 Ah 920 A | 393x175x190 mm | More |
| Exide AGM EK950 | 95 Ah 850 A | 353x175x190 mm | More |
| Exide AGM EK960 | 96 Ah 850 A | 353x175x190 mm | More |
| Exide Excell EB1100 | 110 Ah 850 A | 392x175x190 mm | More |
| Halfords Advanced AGM 019 | 95 Ah 850 A | 353x175x190 mm | More |
| Lucas Fusion AGM LF017 | 95 Ah 850 A | 353x175x190 mm | More |
| Lucas Premium LP020 | 110 Ah 920 A | 393x175x190 mm | More |
| Varta Silver Dynamic AGM G14 | 95 Ah 850 A | 353x175x190 mm | More |
| Varta Silver Dynamic I1 | 110 Ah 920 A | 393x175x190 mm | More |
For the high-performance petrol engines of the Audi A5 8T produced between 2007 and 2016—specifically the S5 quattro V8 without Start-Stop, RS 5 quattro without Start-Stop, 3.2 FSI quattro without Start-Stop, and 3.2 FSI without Start-Stop—the choice of battery is influenced by the substantial electrical demands and engine capacities of these variants. Unlike Start-Stop models, these engines do not require AGM or EFB technology; however, due to their large displacement and power output, batteries with higher capacity and cold cranking amperage are necessary for reliable performance, especially in challenging conditions.
The main group of suitable batteries for these engines is characterized by a case size of 353mm in length, 175mm in width, and 190mm in height, which corresponds to the standard L5 or H8/LB5 battery format. All batteries in this group come with the positive terminal on the right (layout 0), terminal type 1, and use the B13 mounting system, ensuring compatibility with the original battery tray and securing mechanism of the Audi A5 8T. These batteries deliver a capacity of 95 to 96 Ah and a cold cranking amperage of 850 A, which is sufficient to handle the higher starting currents and increased electrical consumption typical of these powerful engines. The selection includes advanced AGM batteries such as the Bosch S5 AGM S5A 13, Varta Silver Dynamic AGM G14, Exide AGM EK950 and EK960, Halfords Advanced AGM 019, and Lucas Fusion AGM LF017. While AGM technology is not strictly necessary for non-Start-Stop engines, it provides added durability and performance, making these batteries a strong choice for drivers seeking maximum reliability and reserve power.
In addition to this primary group, there are batteries with even larger case sizes—specifically 392-393mm in length, 175mm in width, and 190mm in height (corresponding to the L6 format). These batteries, such as the Exide Excell EB1100, Bosch S5 S50 15, Varta Silver Dynamic I1, and Lucas Premium LP020, offer a capacity of 110 Ah and cold cranking amperage up to 920 A. They also feature layout 0, terminal type 1, and B13 mounting. The main difference between these and the L5/H8 batteries is their increased capacity and physical size, providing even higher reserves of starting power and durability. Both battery sizes are compatible with these engine variants, and the choice may depend on the specific battery tray used in the vehicle, as some versions of the A5 8T were equipped with either L5 or L6 battery compartments from the factory.
Given that the Audi A5 8T with these larger petrol engines may have been fitted with different battery sizes or mounting systems depending on the production year and market, it is strongly recommended to check the dimensions, mounting type, and terminal layout of the battery currently installed in the car. Selecting a new battery that closely matches the original in both size and technical specifications ensures a secure fit, full compatibility, and optimum performance for these demanding engines. The primary differences among the available options relate to the overall size (L5/H8 vs. L6), capacity, and technology (AGM vs. standard lead-acid), but all options listed are suitable when matched properly to the vehicle’s original configuration.
Audi A5 8T – diesel engines:
- 2.0 TDI
- 2.0 TDI quattro
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 08 | 74 Ah 680 A | 278x175x190 mm | More |
| Bosch S5 S50 08 | 77 Ah 780 A | 278x175x190 mm | More |
| Exide Excell EB740 | 74 Ah 680 A | 278x175x190 mm | More |
| Exide Premium EA770 | 77 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard HCB 096 | 76 Ah 680 A | 278x175x190 mm | More |
| Lucas Premium LP096 | 75 Ah 680 A | 278x175x190 mm | More |
| Lucas Supreme LS096 | 78 Ah 780 A | 278x175x190 mm | More |
| Varta Blue Dynamic E11 | 74 Ah 680 A | 278x175x190 mm | More |
| Varta Silver Dynamic E44 | 77 Ah 780 A | 278x175x190 mm | More |
For the Audi A5 8T equipped with the 2.0 TDI and 2.0 TDI quattro diesel engines without Start-Stop, the battery requirements are similar to those for non-Start-Stop petrol engines, but with particular attention to the higher cranking demands typical for diesel powertrains. Both of these engines do not utilize Start-Stop technology, so there is no need for AGM or EFB batteries. Instead, a high-quality standard lead-acid battery is recommended to provide the necessary starting power and reliability for cold starts and everyday use.
The most suitable batteries for these diesel variants are those with a standard case size of 278mm in length, 175mm in width, and 190mm in height, which matches the original specifications for the Audi A5 8T’s battery compartment. All recommended batteries feature the positive terminal on the right side (layout 0), terminal type 1, and the B13 mounting system, ensuring a proper and secure fit. In terms of capacity, the ideal range is from 74Ah to 78Ah, with a cold cranking amperage (CCA) between 680A and 780A. This provides robust starting power, which is especially important for diesel engines that require a strong initial burst of current to fire up efficiently in all weather conditions.
Within this group, top choices include the Bosch S4 S40 08 (74Ah, 680A) and S5 S50 08 (77Ah, 780A), Varta Blue Dynamic E11 (74Ah, 680A) and Silver Dynamic E44 (77Ah, 780A), Exide Premium EA770 (77Ah, 760A) and Excell EB740 (74Ah, 680A), Halfords Standard HCB 096 (76Ah, 680A), Lucas Supreme LS096 (78Ah, 780A), and Lucas Premium LP096 (75Ah, 680A). Each of these batteries adheres to the required physical dimensions and electrical specifications, ensuring full compatibility and dependable performance for both the 2.0 TDI and 2.0 TDI quattro diesel engines without Start-Stop. Choosing any of these options guarantees reliable engine starting, proper fitment, and a long service life tailored to the needs of diesel-powered Audi A5 8T models from 2007 to 2016.
Audi A5 8T – diesel engines:
- 2.0 TDI – with Start-Stop
- 2.0 TDI quattro – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 08 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK700 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK720 | 72 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard AGM 096 | 70 Ah 720 A | 278x175x190 mm | More |
| Halfords Advanced AGM 096 | 70 Ah 760 A | 278x175x190 mm | More |
| Lucas Fusion AGM LF096 | 70 Ah 760 A | 278x175x190 mm | More |
| Varta Silver Dynamic AGM E39 | 70 Ah 760 A | 278x175x190 mm | More |
For the Audi A5 8T models equipped with the 2.0 TDI Start-Stop and 2.0 TDI quattro Start-Stop diesel engines, selecting the correct battery is crucial due to the unique demands of the Start-Stop system. Unlike standard diesel variants, these engines require batteries that can handle frequent engine restarts and deeper discharge cycles. As a result, only AGM (Absorbent Glass Mat) batteries should be used, as they are specifically designed to meet the operational requirements of Start-Stop-equipped vehicles.
The optimal battery group for these diesel Start-Stop engines consists of AGM batteries with a case size of 278mm in length, 175mm in width, and 190mm in height, which perfectly matches the original battery compartment of the Audi A5 8T. These batteries are configured with the positive terminal on the right (layout 0), terminal type 1, and the B13 mounting system, ensuring a secure and straightforward fit. In terms of capacity, suitable batteries offer between 70Ah and 72Ah, while the cold cranking amperage (CCA) ranges from 720A to 760A. This specification is essential for providing reliable starts in all weather conditions and for supporting the high cycling demands of the Start-Stop system found in these diesel engines.
Among the most compatible options are the Bosch S5 AGM S5A 08, Varta Silver Dynamic AGM E39, Exide AGM EK700 and EK720, Halfords Advanced AGM 096 and Standard AGM 096, and Lucas Fusion AGM LF096. Each of these batteries is engineered to provide the durability, power reserves, and cycling capability necessary for diesel Start-Stop operation. Fitting any battery from this group ensures optimal Start-Stop system performance, dependable cold-weather starting, and a long service life tailored specifically to the needs of the 2.0 TDI and 2.0 TDI quattro Start-Stop engines in the Audi A5 8T produced between 2007 and 2016.
Audi A5 8T – diesel engines:
- 2.7 TDI (120kW)
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 11 | 80 Ah 740 A | 315x175x190 mm | More |
| Bosch S5 S50 11 | 85 Ah 800 A | 315x175x190 mm | More |
| Exide Excell EB800 | 80 Ah 640 A | 315x175x190 mm | More |
| Exide Premium EA900 | 90 Ah 720 A | 315x175x190 mm | More |
| Lucas Premium LP115 | 80 Ah 670 A | 317x175x190 mm | More |
| Varta Blue Dynamic F16 | 80 Ah 740 A | 315x175x190 mm | More |
| Varta Silver Dynamic F19 | 85 Ah 800 A | 315x175x190 mm | More |
For the Audi A5 8T equipped with the 2.7 TDI (120kW) diesel engine without Start-Stop, the battery requirements reflect the needs of a robust diesel powertrain but do not demand the advanced cycling capabilities of AGM or EFB batteries. These engines require strong cold cranking performance for reliable starting, particularly in low temperatures, and a higher capacity to support the electrical systems typical of this model. The appropriate battery group for the 2.7 TDI consists of standard lead-acid batteries with a larger case size, specifically around 315-317mm in length, 175mm in width, and 190mm in height.
Batteries in this group are designed with the positive terminal on the right side (layout 0), terminal type 1, and utilize the B13 mounting system, which ensures a secure and direct fitment in the original battery tray of the Audi A5 8T. In terms of electrical specifications, recommended batteries offer capacities in the range of 80Ah to 90Ah, with cold cranking amperage (CCA) spanning from 640A up to 800A. These values provide the necessary power reserves for starting the 2.7 TDI efficiently and supporting all in-car electronics, even under demanding conditions or during colder months.
Within this selection, optimal choices include the Bosch S5 S50 11 (85Ah, 800A), Bosch S4 S40 11 (80Ah, 740A), Varta Blue Dynamic F16 (80Ah, 740A), Varta Silver Dynamic F19 (85Ah, 800A), Exide Premium EA900 (90Ah, 720A), Exide Excell EB800 (80Ah, 640A), and Lucas Premium LP115 (80Ah, 670A). Each of these batteries is built to provide dependable starting reliability and long service life for the 2.7 TDI engine without Start-Stop. Their dimensions and electrical characteristics ensure a perfect match for the battery compartment and requirements of the Audi A5 8T, offering users peace of mind and consistent performance in daily operation.
Audi A5 8T – diesel engines:
- 2.0 TDI (130kW, 140kW) – with Start-Stop
- 2.0 TDI quattro (130kW, 140kW) – with Start-Stop
- 2.7 TDI (120kW) – with Start-Stop
- 3.0 TDI (150kW, 180kW) – with Start-Stop
- 3.0 TDI quattro (150kW, 180kW) – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 11 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK800 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK820 | 82 Ah 800 A | 315x175x190 mm | More |
| Halfords Advanced AGM 115 | 80 Ah 800 A | 317x175x190 mm | More |
| Lucas Fusion AGM LF115 | 80 Ah 800 A | 315x175x190 mm | More |
| Varta Silver Dynamic AGM F21 | 80 Ah 800 A | 315x175x190 mm | More |
For the Audi A5 8T models equipped with diesel engines featuring Start-Stop technology—specifically the 2.0 TDI (130kW and 140kW) Start-Stop, 2.0 TDI quattro (130kW and 140kW) Start-Stop, 2.7 TDI (120kW) Start-Stop, 3.0 TDI (150kW and 180kW) Start-Stop, and 3.0 TDI quattro (150kW and 180kW) Start-Stop—the battery requirements are notably more demanding than for non-Start-Stop diesel variants. These engines rely on frequent engine restarts and deeper discharge cycles, meaning that only AGM (Absorbent Glass Mat) batteries are fully compatible and recommended. AGM technology is specifically designed to fulfill the cycling durability and rapid recharge capability required by modern Start-Stop systems, ensuring optimal vehicle performance and battery longevity.
The most suitable battery group for these engines consists of AGM batteries with a case size of 315mm in length, 175mm in width, and 190mm in height, which aligns precisely with the original battery tray dimensions in the Audi A5 8T. All batteries in this group feature a right-hand positive terminal (layout 0), terminal type 1, and the B13 mounting system for secure installation. With a nominal capacity ranging from 80Ah to 82Ah and a cold cranking amperage of 800A, these AGM batteries provide exceptional starting power and resilience to frequent, deep discharge cycles—making them ideal for the high demands of diesel Start-Stop operation.
Within this recommended group, the leading choices include the Bosch S5 AGM S5A 11, Varta Silver Dynamic AGM F21, Exide AGM EK800 and EK820, Lucas Fusion AGM LF115, and Halfords Advanced AGM 115. Each of these batteries offers the advanced cycling performance, high starting current, and robust capacity needed by the 2.0, 2.7, and 3.0 TDI Start-Stop engines. Installing one of these AGM batteries ensures reliable cold starts, optimal Start-Stop system functioning, and the electrical stability necessary to support all onboard systems. This selection fully meets the requirements set by Audi for their diesel Start-Stop variants produced from 2007 to 2016, providing peace of mind and long service life for demanding diesel applications.
Audi A5 8T – diesel engines:
- 2.7 TDI (140kW)
- 3.0 TDI quattro
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 13 | 95 Ah 850 A | 353x175x190 mm | More |
| Bosch S5 S50 15 | 110 Ah 920 A | 393x175x190 mm | More |
| Exide AGM EK950 | 95 Ah 850 A | 353x175x190 mm | More |
| Exide AGM EK960 | 96 Ah 850 A | 353x175x190 mm | More |
| Exide Excell EB1100 | 110 Ah 850 A | 392x175x190 mm | More |
| Halfords Advanced AGM 019 | 95 Ah 850 A | 353x175x190 mm | More |
| Lucas Fusion AGM LF017 | 95 Ah 850 A | 353x175x190 mm | More |
| Lucas Premium LP020 | 110 Ah 920 A | 393x175x190 mm | More |
| Varta Silver Dynamic AGM G14 | 95 Ah 850 A | 353x175x190 mm | More |
| Varta Silver Dynamic I1 | 110 Ah 920 A | 393x175x190 mm | More |
For the Audi A5 8T equipped with the 2.7 TDI (140kW) without Start-Stop and the 3.0 TDI quattro without Start-Stop diesel engines, the battery requirements reflect the robust starting demands and higher electrical loads typical for these powerful diesel units. Both of these engines do not utilize Start-Stop technology, so AGM batteries are not strictly required; however, AGM batteries can still be used for enhanced durability and reserve capacity. In most cases, either advanced AGM batteries or high-capacity standard lead-acid batteries in the appropriate size are suitable, depending on the specific vehicle configuration.
The primary group of compatible batteries for these engine variants comprises models with an L5 (or H8/LB5) case size, measuring 353mm in length, 175mm in width, and 190mm in height. All batteries in this group feature the positive terminal on the right (layout 0), terminal type 1, and the B13 mounting system, ensuring a secure and proper fit in the battery tray originally designed for the Audi A5 8T. This group includes advanced AGM batteries such as the Bosch S5 AGM S5A 13, Varta Silver Dynamic AGM G14, Exide AGM EK950 and EK960, Halfords Advanced AGM 019, and Lucas Fusion AGM LF017. Each of these batteries provides a capacity of 95–96 Ah and a cold cranking amperage of 850 A, offering ample starting power, even in challenging weather, alongside excellent vibration resistance and deep cycling capabilities typical of AGM technology.
In addition to the L5-sized batteries, there are also compatible options with an even larger L6 case size, specifically 392–393mm in length, 175mm in width, and 190mm in height. These batteries—Exide Excell EB1100, Bosch S5 S50 15, Varta Silver Dynamic I1, and Lucas Premium LP020—offer a capacity of 110 Ah and cold cranking amperage up to 920 A. They share the same layout (0), terminal type (1), and B13 mounting, but their increased size provides even greater reserves of starting power and electrical capacity. The choice between L5 and L6 battery sizes depends primarily on the specific battery tray and compartment fitted to the vehicle, as Audi used both sizes in different production runs and market versions of the A5 8T.
Given that both L5 and L6 sizes were used from the factory, and that both AGM and high-quality standard lead-acid batteries are physically compatible, it is essential to check the dimensions, terminal layout, and mounting type of the battery currently installed in your car before making a selection. The main differences between available options are the case size (L5 vs. L6), total capacity, and battery technology (AGM vs. standard). Either type is suitable for the 2.7 TDI (140kW) and 3.0 TDI quattro diesel engines without Start-Stop, provided it closely matches your vehicle’s original specifications. This approach ensures reliable starting, safe installation, and optimum performance for these demanding diesel engines.
If you’re still unsure which battery fits your Audi A5 , or if you want to help others in their selection, please send us a photo of your current battery in the comment section at the bottom of the page. You can also send the picture to contact@whatbattery.co.uk (we will place it in the comments to also help other users). Be sure to specify the car model, year, type, as well as the engine capacity and power. We’ll do our best to assist you!