For the Audi A4 B7 model produced between 2004 and 2008, selecting the right battery is crucial, especially considering the variety of engine versions and their energy requirements. In smaller petrol versions like the 1.6, 1.8 T, and 2.0, the optimal battery capacity is between 60 and 65 Ah, with a starting current of 540-640 A. Sample models that may fit these versions include Bosch S40 05, Bosch S50 05, Exide EA640, Exide EB620, and Varta D15 and Varta D24. These lead-acid batteries are well-suited for cars without a Start-Stop system.
Larger engines, such as the 3.0 and 3.2 FSI, require batteries with higher capacities of 80 to 90 Ah and a starting current of 640-800 A. For these versions, suitable options might be Bosch S50 11, Exide EA900, Exide EB800, and Varta F16 and Varta F19. The quattro versions also use these batteries, providing them with the reliability and power needed for the intensive operation of these engines.
For diesel engines like the popular 1.9 TDI and 2.0 TDI, a battery with a capacity of 74 to 78 Ah and a starting current of 680-780 A is required. Sample models that may meet these requirements include Bosch S40 08, Exide EA770, Halfords HCB 096, and Varta E11 and Varta E44. These engines have slightly higher energy needs, making the choice of the right battery essential for their proper functioning.
In the case of the S4 quattro and RS4 quattro, the most powerful versions of this model, high-capacity batteries with a starting current of 800 to 920 A are recommended. In RS4 quattro models, both AGM and lead-acid batteries are used, so it is advisable to check the current battery type before purchasing. Suitable sample models include Bosch S50 15, Exide EB1100, Exide EK950, and Varta G14 and Varta I1.
The Audi A4 B7 is a car that, with the right battery choice, provides reliability for many years. Regular maintenance, especially in the winter, and taking care of the battery terminals and charge level will ensure its longevity and trouble-free use.
Audi A4 in version B7 was produced in the years 2004 – 2008. Below we present the specifications of batteries suitable for specific engines.
Basic parameters of batteries suitable for Audi A4 (2004-2008):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Audi A4 B7 – petrol engines:
- 1.6
- 1.8 T
- 1.8 T quattro
- 2.0
- 2.0 FSI
- 2.0 TFSI
- 2.0 TFSI quattro
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 05 | 60 Ah 540 A | 242x175x190 mm | More |
| Bosch S5 S50 05 | 63 Ah 610 A | 242x175x190 mm | More |
| Exide Excell EB620 | 62 Ah 540 A | 242x175x190 mm | More |
| Exide Premium EA640 | 64 Ah 640 A | 242x175x190 mm | More |
| Halfords Standard HCB 027 | 62 Ah 550 A | 242x175x190 mm | More |
| Lucas Premium LP027 | 60 Ah 540 A | 243x175x190 mm | More |
| Lucas Supreme LS027 | 65 Ah 640 A | 242x175x190 mm | More |
| Varta Blue Dynamic D24 | 60 Ah 540 A | 242x175x190 mm | More |
| Varta Silver Dynamic D15 | 63 Ah 610 A | 242x175x190 mm | More |
Audi A4 B7 – petrol engines:
- 3.0
- 3.0 quattro
- 3.2 FSI
- 3.2 FSI quattro
| 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 |
Audi A4 B7 – petrol engines:
- S4 quattro
| 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 |
Audi A4 B7 – petrol engines:
- RS4 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 |
Audi A4 B7 – diesel engines:
- 1.9 TDI
- 2.0 TDI
- 2.0 TDI 16V
- 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 |
Audi A4 B7 – diesel engines:
- 2.5 TDI
- 2.7 TDI
- 3.0 TDI quattro
| 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 |
FAQ – Audi A4 battery
What battery size does the Audi A4 B7 need?
The correct battery size for an Audi A4 B7 depends mainly on the engine version. Smaller petrol engines such as the 1.6, 1.8 T and 2.0 usually use batteries around 60–65 Ah, with dimensions close to 242 x 175 x 190 mm. Popular diesel versions such as the 1.9 TDI and 2.0 TDI typically require a stronger battery of about 74–78 Ah and 278 x 175 x 190 mm. Larger petrol and diesel engines, including 3.0, 3.2 FSI, 2.7 TDI and 3.0 TDI quattro, usually need batteries in the 80–90 Ah range.
Which battery is best for an Audi A4 B7 1.9 TDI or 2.0 TDI?
For the Audi A4 B7 with 1.9 TDI or 2.0 TDI diesel engines, a battery with a capacity of around 74–78 Ah and a cold cranking current of approximately 680–780 A is usually recommended. These diesel engines need more starting power than smaller petrol units, especially in cold weather. Examples of suitable batteries include Bosch S40 08, Bosch S50 08, Exide EA770, Varta E11 and Varta E44.
Can I fit a higher Ah battery in my Audi A4 B7?
In many cases, it is possible to fit a battery with slightly higher capacity, provided that the physical dimensions, terminal layout and base hold-down match the car. For the Audi A4 B7, the battery must have the correct polarity, the positive terminal on the right side, and a B13 base hold-down. However, choosing a battery that is much larger than recommended may cause fitting problems, so it is always worth checking the size of the current battery tray before buying.
Does the Audi A4 B7 need an AGM battery?
Most Audi A4 B7 versions do not require an AGM battery and can use a standard lead-acid battery. However, some RS4 quattro versions may be equipped with either standard lead-acid or AGM batteries. The safest rule is to replace the existing battery with the same technology: standard lead-acid with standard lead-acid, AGM with AGM, and EFB with EFB. This helps avoid charging and durability issues.
What battery should I choose for an Audi A4 B7 quattro?
The quattro drivetrain itself is not the only factor that decides the battery size, but quattro versions often come with more powerful engines and higher electrical demand. For example, 1.8 T quattro and 2.0 TFSI quattro versions may use batteries similar to other smaller petrol engines, around 60–65 Ah. Larger quattro models such as 3.0 quattro, 3.2 FSI quattro or 3.0 TDI quattro usually need larger batteries around 80–90 Ah. S4 quattro and RS4 quattro require even stronger batteries.
What are the correct battery dimensions for Audi A4 B7?
The battery dimensions vary by engine. Smaller petrol engines usually use batteries around 242 x 175 x 190 mm. The 1.9 TDI and 2.0 TDI diesel versions commonly use 278 x 175 x 190 mm batteries. Larger engines often require batteries around 315 x 175 x 190 mm, while S4 quattro and some RS4 quattro versions may use even longer batteries, such as 353 x 175 x 190 mm or 393 x 175 x 190 mm. Always compare the dimensions with the battery currently fitted in the car.
Do I need to code the battery after replacement in an Audi A4 B7?
In most standard Audi A4 B7 versions, battery replacement does not require the same battery registration procedure used in many newer Audi models. After replacing the battery, some settings such as the clock, radio presets or one-touch window function may need to be reset. If the car has additional aftermarket equipment or a more advanced charging system, it is worth checking the owner’s manual or consulting a specialist.
Why does my Audi A4 B7 struggle to start even with a new battery?
If the car still struggles to start after fitting a new battery, the problem may not be the battery itself. Common causes include poor battery terminal contact, a weak starter motor, alternator charging problems, glow plug issues in diesel engines, parasitic current drain, or an incorrect battery specification. For diesel versions, using a battery with too low cold cranking amps can also cause difficult starting, especially during winter.
If you’re still unsure which battery fits your Audi A4 , 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!
One response to “Audi A4 B7 (2004-2008) – batteries”
I own a 2007 VW Passat 2.0 TDI and I have a Varta battery with a capacity of 61 Ah. I am satisfied. Best regards.