When considering the right battery for the Audi A8 II (D3) produced between 2002 and 2010, it is essential to understand the variety of engine options and electrical systems present in this luxury sedan. The correct choice of battery ensures reliable performance, optimal starting power, and protection of the vehicle’s sensitive electronics. The A8 D3, being a technological flagship of its era, was equipped with advanced electrical systems for its time, which means that battery selection is not only about size but also about the right technology and specification to match your specific engine and equipment.
Most petrol engines in the Audi A8 D3, such as the 2.8 FSI, 3.0, 3.2 FSI, 3.2 FSI quattro, 3.7 quattro, 4.2 quattro, 4.2 FSI quattro, 6.0 W12 quattro, and the sporty S8 quattro, require batteries with a capacity between 95 and 110 Ah and a starting current ranging from 850 to 920 A. These robust requirements are a reflection of the powerful engines and the extensive comfort and safety features found in these models. Both AGM (Absorbent Glass Mat) and conventional lead-acid batteries are suitable for these vehicles, but it is crucial to match the type of battery that is currently installed in your car. Audi, during the production of the A8 D3, could fit either AGM or traditional lead-acid batteries depending on the vehicle configuration and market, so visually confirming the type currently used is always the safest choice.
For diesel variants such as the 4.2 TDI quattro and 3.0 TDI quattro, the electrical demands are equally high, if not higher, due to the nature of diesel starting systems. The 4.2 TDI quattro typically uses a battery with a capacity range of 95 to 100 Ah and a starting current of 800 to 900 A, favoring a conventional lead-acid battery. The 3.0 TDI quattro, on the other hand, is similar to the petrol models, with both AGM and lead-acid batteries appropriate, and with a capacity between 95 and 110 Ah and starting current of 850 to 920 A. If you own the rare and powerful 4.0 TDI quattro, you should opt for a battery at the higher end of the scale—110 Ah and 850 to 920 A—again, in a lead-acid variant.
Some examples of suitable batteries for the Audi A8 D3 include the Bosch S50 15, Bosch S5A 13, Exide EB1100, Exide EK950, Exide EK960, Halfords AGM 019, Lucas LF017, Lucas LP020, Varta G14, and Varta I1. These are just examples of compatible models, and it’s important to double-check the dimensions and terminal layout to ensure a proper fit. For diesel engines where only lead-acid batteries are recommended, models like Bosch S40 13, Exide EA1000, Halfords HCB 019, Lucas LS019, Varta G3, and Varta H3 can be considered as potential options. However, for the most accurate match, always refer to the specific requirements of your engine and check the current battery’s label for details.
One fascinating fact about the Audi A8 D3 is its early adoption of advanced electronic management and energy recovery systems, especially in models without the modern Start-Stop feature. Even without Start-Stop, these cars place significant stress on the battery due to the large number of onboard electronics, including air suspension, advanced infotainment, and safety systems. That’s why high-capacity and high-quality batteries are more than just a convenience—they are a necessity for trouble-free operation.
It is also worth noting that while AGM batteries are more resistant to deep cycling and are better suited to vehicles with high electrical demands or frequent short journeys, conventional lead-acid batteries are often sufficient for cars driven longer distances or in milder climates. AGM batteries are also more spill-resistant and can better withstand vibration, which is useful if you drive your A8 on rougher roads. However, AGM batteries tend to be more expensive, so the decision is a balance between budget and performance needs.
Ultimately, the best practice is to check the type, dimensions, and specifications of the battery currently installed in your Audi A8 D3. Matching the existing battery’s technology—whether AGM or lead-acid—is crucial, as the car’s charging system is tuned to that specific type. Remember to register the new battery in the vehicle’s computer system if your model requires it, to ensure proper charging and battery health monitoring. By selecting a high-quality, correctly specified battery, you will maintain the legendary comfort and reliability of your Audi A8 D3 and enjoy its advanced features without worry.
Audi A8 in version II (D3) was produced in the years 2002 – 2010. The following table presents information about batteries that match each of the engines available on the market.
Basic parameters of batteries suitable for Audi A8 (2002-2010):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Audi A8 II (D3) – petrol engines:
- 2.8 FSI
- 3.0
- 3.2 FSI
- 3.2 FSI quattro
- 3.7 quattro
- 4.2 FSI quattro
- 4.2 quattro
- 6.0 W12 quattro
- S8 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 A8 II (D3) – diesel engines:
- 4.2 TDI 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 A8 II (D3) – diesel engines:
- 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 |
Audi A8 II (D3) – diesel engines:
- 4.0 TDI quattro
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 S50 15 | 110 Ah 920 A | 393x175x190 mm | More |
| Exide Excell EB1100 | 110 Ah 850 A | 392x175x190 mm | More |
| Lucas Premium LP020 | 110 Ah 920 A | 393x175x190 mm | More |
| Varta Silver Dynamic I1 | 110 Ah 920 A | 393x175x190 mm | More |
If you’re still unsure which battery fits your Audi A8 , 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!