When selecting the right battery for the Audi A3 III (8V) Sportback produced from 2012 onwards, it is crucial to understand the specific requirements of your car’s engine and electrical system, as well as your own driving habits. The battery is not only responsible for starting the vehicle, but it also powers all electronics, entertainment systems, and in newer models, increasingly sophisticated driver assistance features. Modern cars like the Audi A3 demand batteries with considerable reliability and capacity. The choice largely depends on whether your model is equipped with the Start-Stop system, the type of engine you have, and the kind of fuel your car uses.
For Audi A3 III models with conventional petrol engines such as the 2.0, 2.0 FSI, 2.0 TFSI, and 2.0 TFSI quattro, and without the Start-Stop system, the best match is a traditional lead-acid battery. These engines typically require a battery with a capacity between 60 to 65 Ah and a cold cranking amperage (CCA) ranging from 540 to 640 A. Lead-acid batteries have been a standard for many years due to their affordability, reliability, and decent performance in a range of conditions. Some compatible examples for these specifications include the Bosch S40 05, Bosch S50 05, Exide EA640, Exide EB620, Halfords HCB 027, Lucas LP027, Lucas LS027, Varta D15, and Varta D24. These models are referenced here as suitable options, but it is always wise to verify dimensions and terminal layouts to ensure a perfect fit for your particular vehicle.
If your Audi A3 is equipped with a Start-Stop system, which is increasingly common in modern vehicles to help save fuel and reduce emissions, your choice of battery shifts significantly. Standard lead-acid batteries are not designed to handle the frequent cycles of stopping and starting the engine. Instead, what you need is an AGM (Absorbent Glass Mat) battery, which is built to endure far more charging and discharging cycles and delivers higher performance in demanding conditions. For engines such as the 1.4 TFSI, 1.4 TFSI g-tron, 1.8 TFSI, 1.8 TFSI quattro, S3 quattro, as well as the diesel-powered 1.6 TDI and 2.0 TDI and their quattro variants, all featuring Start-Stop, the recommended battery capacity increases to 70-72 Ah with a CCA of 720-760 A. Some suitable AGM batteries for these requirements include the Bosch S5A 08, Exide EK700, Exide EK720, Halfords AGM 096, Lucas LF096, and Varta E39. Again, these are just some of the options that can fit your car, but always confirm the exact dimensions and specifications before making your purchase.
It’s interesting to note that AGM technology is not only about durability, but also about safety and performance. AGM batteries are fully sealed, making them spill-proof and more resistant to vibration, which is a valuable feature in vehicles that might be driven on rough roads or in sporty conditions. This technology also allows for faster recharging and more reliable power delivery to support modern car electronics, especially in vehicles equipped with Start-Stop and energy recovery systems.
When replacing the battery in an Audi A3 III (8V), especially in Start-Stop models, keep in mind that some vehicles may require a battery registration or coding process. This is done through the car’s onboard system and ensures that the charging system is optimized for the new battery. Not performing this step could lead to suboptimal battery life or even electronic issues. While some owners choose to perform this themselves with an OBD tool, many prefer to leave it to professionals.
Regardless of the engine variant, it is always recommended to choose a battery from a reputable manufacturer, as quality and reliability are key for the long-term performance of your vehicle. Pay careful attention to the physical size (length, width, height), the position of the terminals, and the holding fixtures, as these can vary even between batteries with similar electrical specifications. It is also a good idea to check the production date of the battery to ensure you are getting a fresh product, as batteries begin to degrade even when not in use.
To sum up, for non-Start-Stop petrol engines in the Audi A3 III (8V), a 60-65 Ah lead-acid battery with 540-640 A CCA is generally appropriate, while for Start-Stop equipped petrol and diesel engines, a 70-72 Ah AGM battery with 720-760 A CCA is the recommended choice. Always double-check specifications and consult your owner’s manual or a trusted specialist if in doubt. Choosing the right battery will help you avoid unexpected breakdowns and ensure the smooth operation of all vehicle systems, keeping your Audi A3 performing at its best.
Audi A3 in version III (8V) Sportback is produced from 2012. We invite you to a list of batteries matching individual engine versions.
Basic parameters of batteries suitable for Audi A3 (2012-):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Audi A3 III (8V) Sportback – petrol engines:
- 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 A3 III (8V) Sportback – petrol engines:
- 1.4 TFSI – with Start-Stop
- 1.4 TFSI g-tron – with Start-Stop
- 1.8 TFSI – with Start-Stop
- 1.8 TFSI quattro – with Start-Stop
- S3 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 |
Audi A3 III (8V) Sportback – diesel engines:
- 1.6 TDI – with Start-Stop
- 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 |
If you’re still unsure which battery fits your Audi A3 , 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!