Choosing the right battery for your Audi A3 III (8V) produced from 2012 onwards is essential for ensuring optimal performance, reliability, and the longevity of your vehicle’s electrical system. The selection process is influenced by several key factors, including the engine type, the presence of modern features such as the Start-Stop system, and the technical requirements regarding battery capacity and cold cranking amps. Audi A3 III (8V) models, regardless of whether you own a petrol or diesel variant, share very similar battery specifications due to their advanced electronics and the widespread inclusion of the Start-Stop feature, which places specific demands on the battery’s endurance and efficiency.
One of the most common questions among Audi A3 owners is which battery technology to choose. In these vehicles, the recommended option is the AGM (Absorbent Glass Mat) type. AGM batteries are specifically designed to withstand the high number of charge and discharge cycles associated with Start-Stop systems. Unlike traditional lead-acid batteries, AGM batteries use a fiberglass mat to absorb the electrolyte, which makes them spill-proof and more resistant to vibrations. This construction ensures that the battery can quickly recover its charge after each engine restart, which happens frequently in city driving conditions. For the Audi A3 III (8V), this is not a luxury but a necessity, as using a standard battery would lead to premature failure and potentially cause issues with the Start-Stop system functionality.
Based on the data from the table, it is evident that all primary engine variants, including 1.2 TFSI, 1.4 TFSI, 1.8 TFSI (and its quattro version), S3 quattro, as well as the diesel engines like 1.6 TDI and 2.0 TDI (including quattro), require a battery with a minimum capacity of 70 Ah and a maximum of 72 Ah. The cold cranking amps (CCA) should fall between 720 and 760 A. Choosing a battery within these parameters guarantees smooth engine starts, even in colder climates, and ensures that all electrical systems—from the infotainment to safety features—function reliably. It is also worth noting that the capacity and CCA figures are particularly important for diesel engines, as they typically demand more power during startup, especially in winter, due to higher compression ratios.
When searching for a replacement battery, you can look for reputable brands that manufacture AGM batteries meeting these specifications. Some examples of compatible models include Bosch S5A 08, Exide EK700, Exide EK720, Halfords AGM 096, Lucas LF096, and Varta E39. These are merely illustrative examples of batteries which fit the Audi A3 III (8V) requirements; you may find other models with similar ratings from different brands that are equally suitable. Regardless of the brand, the most crucial aspect is to ensure the battery is AGM and matches the required capacity and CCA. Opting for a well-known brand often provides additional peace of mind in terms of warranty and product quality.
An interesting aspect of modern Audi electrical systems is that after replacing the battery, it is recommended to register the new battery with the car’s onboard computer using diagnostic equipment. This procedure allows the car’s energy management system to recognize the new battery and optimize charging parameters, which helps maximize the new battery’s lifespan and performance. Skipping this step in advanced vehicles like the Audi A3 III (8V) can lead to suboptimal battery performance or charging issues over time.
Another point to consider is the environmental benefit of AGM batteries. They are more recyclable than conventional batteries and tend to last longer, which reduces the frequency of replacements and the associated environmental impact. In addition, as the automotive industry moves towards greater electrification and efficiency, systems like Start-Stop are becoming standard, making AGM batteries an increasingly common choice not just in premium vehicles but across many car segments.
In summary, for the Audi A3 III (8V) from 2012 onwards, an AGM battery with a capacity of 70-72 Ah and a cold cranking amperage of 720-760 A should be chosen, especially to support the Start-Stop system and the demands of modern onboard electronics. Using a battery from a reputable brand and ensuring it is properly registered in the vehicle are the best ways to guarantee reliable performance and trouble-free operation for years to come.
Audi A3 in version III (8V) is produced from 2012. Below we present the specifications of batteries suitable for specific engines.
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) – petrol engines:
- 1.2 TFSI – with Start-Stop
- 1.4 TFSI – 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) – 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!