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Battery Specifications
| Parameter | Specification |
|---|---|
| Battery Group | 027 on the 30 / 35 TFSI, 30 TDI and g-tron; 096 on the mild hybrids, 40 TFSI, TFSIe and S3; 115 on the RS3 |
| Type | EFB or AGM depending on engine. AGM is the recommendation on the 40 TDI quattro and the RS3 |
| Capacity | 60 Ah (type 027), 70 Ah (type 096) or 80 Ah (type 115, RS3) |
| Cold Cranking Amps | 640–680 A (027), 760 A (096) or 800 A (115) |
| Dimensions | 242 x 175 x 190 mm (027), 278 x 175 x 190 mm (096) or 315 x 175 x 190 mm (115, RS3) |
| Terminal Type | Top post |
| Start-Stop Compatible | Yes |
What the OE fitment data lists for this car
| Engine | Batteries listed |
|---|---|
| 30 TFSI (110 PS), 35 TFSI (150 PS) | 027 EFB 60 Ah 640 A (242 x 175 x 190) – recommended; 096 EFB/AGM 70 Ah 760 A also listed |
| 30 TDI (116 PS) | 027 EFB 60 Ah 640 A (242 x 175 x 190) – recommended; 096 EFB/AGM 70 Ah 760 A also listed |
| 30 g-tron (131 PS) | 027 EFB 60 Ah 640 A (242 x 175 x 190) – recommended; 027 AGM 60 Ah 680 A |
| 30 / 35 TFSI mild hybrid, 40 TFSI (190 PS, incl. quattro) | 096 EFB 70 Ah 760 A (278 x 175 x 190) – recommended; 096 AGM 70 Ah 760 A |
| 40 TFSIe (204 PS), 45 TFSIe (245 PS) plug-in hybrids | 096 EFB 70 Ah 760 A (278 x 175 x 190) – recommended; the 40 TFSIe also lists 027 AGM 60 Ah 680 A as recommended |
| 40 TDI quattro (200 PS) | 096 AGM 70 Ah 760 A (278 x 175 x 190) – recommended |
| S3 quattro (290 / 310 PS) | 096 EFB or 096 AGM 70 Ah 760 A (278 x 175 x 190) |
| RS3 quattro (400 / 407 PS) | 115 AGM 80 Ah 800 A (315 x 175 x 190) – recommended. This is the only A3 listed with the long 315 mm case |
Source: published VARTA battery-finder fitment data (varta-automotive.com) for the Audi A3 (8Y), consulted August 2026. Where more than one battery is listed, the manufacturer fits different sizes across builds — measure the battery you remove, or confirm by registration, before ordering.
No A3 is listed with a 353 mm battery. Match the case size and technology of the battery you remove.
Recommended Batteries for Audi A3
Bosch S4 E (EFB), type 027
Varta Silver Dynamic AGM, type 096
Frequently Asked Questions
What battery does a Audi A3 need?
It depends on the engine, and it is not a type 019. VARTA fitment data for the A3 (8Y) lists a type 027 battery, 242 x 175 x 190 mm, at 60 Ah and 640 A for the 30 TFSI, 35 TFSI, 30 TDI and g-tron. The mild hybrids, the 40 TFSI, the plug-in hybrids and the S3 are listed with a type 096, 278 x 175 x 190 mm, at 70 Ah and 760 A. Only the RS3 is listed with the long 315 mm type 115 AGM at 80 Ah and 800 A. Confirm by registration, or measure the battery you remove, before ordering.
Does the Audi A3 need an AGM or EFB battery?
Both appear, depending on the engine. VARTA gives EFB as the recommended fitment for the 30 and 35 TFSI, the 30 TDI, the g-tron, the 40 TFSI and the plug-in hybrids, and AGM as the recommendation for the 40 TDI quattro and the RS3. Replace like for like: if you remove an AGM, fit an AGM, and never put a plain flooded battery into a start-stop A3.
How long does a Audi A3 battery last?
Typically 4–6 years depending on driving patterns. Short urban journeys and cold winters reduce battery life. Start-stop systems are harder on batteries, so quality AGM batteries are essential.
Can I replace the Audi A3 battery myself?
Yes for most models — it’s usually located in the engine bay. However, start-stop vehicles may need the battery management system reset with a diagnostic tool after fitting.
How we check fitment for this guide
We cross-reference fitment figures against manufacturer specifications and OE-supplier catalogue data where available, and matched to the standard codes that actually govern fit — battery type/group sizes, wiper lengths and fitting types, bulb fitment codes, tyre size markings, and oil specifications. We work by make, model, year, engine, and build date, because a single model can take different parts across its life. Where the right part depends on your exact vehicle, we tell you to confirm by registration or VIN. More on our method →