# Which battery for the Audi A4 B8 (8K, 2007-2015)?

> Audi A4 B8 8K battery: AGM 70 Ah and 760 A with Start-Stop (Varta A7), conventional 95 Ah without (Varta G3). Table by engine and number plate search.

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- **Last update**: 2026-11-10

A4 B8 (8K2)

- A4 B8 Avant (8K5)

[← All generations of the Audi A4](https://bateriasonline.es/en/audi-a4-battery)
Car battery by model
With Start-Stop, the Audi A4 B8 (8K, 2007-2015) usually takes a battery like the Varta A7: AGM, 70 Ah and 760 A, in case size L3. Versions without Start-Stop take the Varta G3 (conventional, 95 Ah and 800 A); the table shows the battery for each engine.
- 2007-2015
- 17 engines
- AGM · conventional
- Case L3

[Check with your number plate](https://bateriasonline.es/en/battery-finder-plate-or-vin) We show you only the batteries that fit your exact version.

## Recommended batteries for the Audi A4 B8 8K

 For Start-Stop versions
[Varta A7](https://bateriasonline.es/en/varta-a7)
AGM 70 Ah · 760 A (EN)
Case L3 · 278 × 175 × 190 mm · + right
Recommended for 8 of 17 engines
[See price and specs Varta A7 ](https://bateriasonline.es/en/varta-a7)
 For versions without Start-Stop
[Varta G3](https://bateriasonline.es/en/varta-g3)
conventional 95 Ah · 800 A (EN)
Case L5 · 353 × 175 × 190 mm · + right
Recommended for 4 of 17 engines
[See price and specs Varta G3 ](https://bateriasonline.es/en/varta-g3)
 For Start-Stop versions
[Varta A6](https://bateriasonline.es/en/varta-a6)
AGM 80 Ah · 800 A (EN)
Case L4 · 315 × 175 × 190 mm · + right
Recommended for 11 of 17 engines
[See price and specs Varta A6 ](https://bateriasonline.es/en/varta-a6)
 Equivalent to the Varta G3
[Tudor TA1000](https://bateriasonline.es/en/tudor-ta1000)
conventional 100 Ah · 900 A (EN)
Case L5 · 353 × 175 × 190 mm · + right
Same dimensions and terminal layout, the same or higher capacity and the same or better technology
[See price and specs Tudor TA1000 ](https://bateriasonline.es/en/tudor-ta1000)

## Audi A4 B8 8K battery by engine

Each row groups the versions that share an engine. When an engine lists more than one battery, it is because the battery changes with the version or equipment: your number plate settles it.

| Engine | Power | Years | Fuel | With Start-Stop | Without Start-Stop |
|---|---|---|---|---|---|
| 1.8 TFSICABA, CABB, CDHA, CDHB, CJEB | 88-125 kW (120-170 hp) | 2007-2015 | Petrol | Varta A6 AGM · 80 Ah · 800 A · L4 · + right Varta A5 AGM · 95 Ah · 850 A · L5 · + right | Varta D24 conventional · 60 Ah · 540 A · L2 · + right |
| 1.8 TFSI quattroCDHB, CJEB | 118-125 kW (160-170 hp) | 2008-2015 | Petrol | Varta A6 AGM · 80 Ah · 800 A · L4 · + right | Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 2.0 TDICAGA, CAGB, CAGC, CAHA, CAHB, CGLC… | 88-140 kW (120-190 hp) | 2007-2015 | Diesel | Varta A7 AGM · 70 Ah · 760 A · L3 · + right Varta A6 AGM · 80 Ah · 800 A · L4 · + right Varta A5 AGM · 95 Ah · 850 A · L5 · + right | Varta G3 conventional · 95 Ah · 800 A · L5 · + right Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 2.0 TDI 16V | 103 kW (140 hp) | — | Diesel | Varta A6 AGM · 80 Ah · 800 A · L4 · + right | Varta F16 conventional · 80 Ah · 740 A · L4 · + right Varta G3 conventional · 95 Ah · 800 A · L5 · + right |
| 2.0 TDI quattroCAGA, CAHA, CGLC, CJCA, CJCD, CNHA… | 105-140 kW (143-190 hp) | 2008-2015 | Diesel | Varta A6 AGM · 80 Ah · 800 A · L4 · + right Varta A7 AGM · 70 Ah · 760 A · L3 · + right Varta A5 AGM · 95 Ah · 850 A · L5 · + right | Varta G3 conventional · 95 Ah · 800 A · L5 · + right Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 2.0 TFSICAEA, CAEB, CAED, CDNB, CDNC, CFKA… | 132-165 kW (180-224 hp) | 2008-2015 | Petrol | Varta A7 AGM · 70 Ah · 760 A · L3 · + right Varta A6 AGM · 80 Ah · 800 A · L4 · + right | Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 2.0 TFSI flexible fuelCFKA | 132 kW (180 hp) | 2009-2015 | Petrol | Varta A7 AGM · 70 Ah · 760 A · L3 · + right | Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 2.0 TFSI flexible fuel quattroCFKA | 132 kW (180 hp) | 2009-2015 | Petrol | Varta A7 AGM · 70 Ah · 760 A · L3 · + right | Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 2.0 TFSI quattroCAEB, CAED, CDNC, CFKA, CNCD, CPMA… | 132-165 kW (180-224 hp) | 2008-2015 | Petrol | Varta A7 AGM · 70 Ah · 760 A · L3 · + right Varta A6 AGM · 80 Ah · 800 A · L4 · + right | Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 2.7 TDICAMA, CAMB, CGKA, CGKB | 120-140 kW (163-190 hp) | 2007-2012 | Diesel | — | Varta F16 conventional · 80 Ah · 740 A · L4 · + right |
| 3.0 TDICLAB | 150 kW (204 hp) | 2011-2015 | Diesel | Varta A6 AGM · 80 Ah · 800 A · L4 · + right | — |
| 3.0 TDI quattroCAPA, CCLA, CCWA, CCWB, CDUC, CKVB… | 155-180 kW (211-245 hp) | 2007-2015 | Diesel | Varta A5 AGM · 95 Ah · 850 A · L5 · + right Varta A6 AGM · 80 Ah · 800 A · L4 · + right Varta A7 AGM · 70 Ah · 760 A · L3 · + right Varta A4 AGM · 105 Ah · 950 A · L6 · + right | Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| 3.0 TFSI quattroCMUA, CRED | 200 kW (272 hp) | 2012-2015 | Petrol | Varta A6 AGM · 80 Ah · 800 A · L4 · + right | — |
| 3.2 FSICALA | 195 kW (265 hp) | 2008-2012 | Petrol | Varta A7 AGM · 70 Ah · 760 A · L3 · + right | Varta E11 conventional · 74 Ah · 680 A · L3 · + right Varta G3 conventional · 95 Ah · 800 A · L5 · + right |
| 3.2 FSI quattroCALA | 195 kW (265 hp) | 2007-2012 | Petrol | — | Varta E11 conventional · 74 Ah · 680 A · L3 · + right |
| RS4 quattroCFSA | 331 kW (450 hp) | 2012-2015 | Petrol | Varta A5 AGM · 95 Ah · 850 A · L5 · + right | — |
| S4 quattroCAKA, CCBA, CGWC, CGXC, CREC, CTUB | 245 kW (333 hp) | 2008-2015 | Petrol | Varta A6 AGM · 80 Ah · 800 A · L4 · + right | Varta I1 conventional · 110 Ah · 920 A · L6 · + right |

With Start-Stop: versions with automatic engine stop-start, or that leave the factory with an EFB or AGM battery. Ah = capacity; A = cold cranking current (EN standard); + right/+ left = side of the positive terminal. Under each engine you will find its engine codes, handy for identifying your version.

## What you should know about the Audi A4 B8 8K

This page covers A4 B8 (8K2) and A4 B8 Avant (8K5): 17 engines in the table, petrol (11) and diesel (6). Most engines have Start-Stop (15 of 17), which is why the most common battery type is AGM, with 70 Ah. The usual case size is L3 (278 × 175 × 190 mm).
- Model fact: the Audi A4 B8 8K mainly uses case sizes L3 (278 × 175 × 190 mm), L5 (353 × 175 × 190 mm) and L4 (315 × 175 × 190 mm). A battery of a different size will not sit securely in the car’s battery tray.
- General tip: if your car came from the factory with an AGM battery, replace it with another AGM; if it has an EFB, with an EFB or an AGM. A conventional battery in a Start-Stop car wears out much sooner and the system may stop working.
- General tip: on Seat, Volkswagen and Audi models with Start-Stop, the new battery is usually coded into the energy management system with a diagnostic tool, so that the alternator charges it according to its type and capacity.
- General tip: mid-size and executive saloons keep drawing power while parked (alarm, telematics, comfort systems). If the car goes weeks without being driven, a battery maintainer will extend the life of the battery.

## Frequently asked questions

### Which battery does the Audi A4 B8 (8K, 2007-2015) take?

With Start-Stop, the Audi A4 B8 (8K, 2007-2015) usually takes a battery like the Varta A7: AGM, 70 Ah and 760 A, in case size L3. Versions without Start-Stop take the Varta G3 (conventional, 95 Ah and 800 A); the table shows the battery for each engine.

### Can I fit a standard battery in my Audi A4 B8 with Start-Stop?

It is not recommended. If it came from the factory with an AGM battery, such as the Varta A7, the replacement should also be AGM: with an EFB or a conventional battery it wears out sooner and the Start-Stop system may stop working.

### What size battery does the Audi A4 B8 take?

Depending on the engine, the Audi A4 B8 8K uses these case sizes: L3 (278 × 175 × 190 mm), L5 (353 × 175 × 190 mm) and L4 (315 × 175 × 190 mm); dimensions are length × width × height. Also check that the positive terminal is on the same side as on your current battery.

### Does the Varta A7 fit the Audi A4 B8 8K?

Yes, it is one of the recommended batteries for the Audi A4 B8 8K with the 2.0 TDI, 2.0 TDI quattro, 2.0 TFSI, 2.0 TFSI flexible fuel, 2.0 TFSI flexible fuel quattro and 2.0 TFSI quattro engines (8 of the 17 engines in the table). For the others, check their row in the table or search by number plate.

### How do I find out exactly which battery my Audi A4 B8 takes?

Enter your number plate or chassis number (VIN) in our battery finder: it identifies the exact engine and shows you only the compatible batteries. You can also check the label on your current battery: capacity (Ah), cold cranking (A, EN standard) and technology (AGM, EFB or conventional).

## Other Audi A4 generations

- [ Audi A4 B9 (8W) 2015-2020 ](https://bateriasonline.es/en/audi-a4-battery#gen-audi-a4-b9)
- [ Audi A4 B7 (8E) 2004-2009 ](https://bateriasonline.es/en/audi-a4-battery#gen-audi-a4-b7)
- [ Audi A4 B6 (8E) 2000-2005 ](https://bateriasonline.es/en/audi-a4-battery#gen-audi-a4-b6)
- [ Audi A4 B5 (8D) 1994-2001 ](https://bateriasonline.es/en/audi-a4-battery#gen-audi-a4-b5)

## More information

- [Audi A4 battery: every generation](https://bateriasonline.es/en/audi-a4-battery)
- [Car battery sizes: L1-L6, LB1-LB5, B and D (Asian) cases](https://bateriasonline.es/en/car-battery-sizes-l-lb-b-d-cases)
- [Varta A7 (formerly E39): what changed and equivalents](https://bateriasonline.es/en/varta-a7-e39-agm-battery-equivalents)
- [Varta, Bosch, Exide and Tudor car battery equivalents table](https://bateriasonline.es/en/varta-bosch-exide-tudor-car-battery-equivalents)
- [Start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb)
- [Car batteries](https://bateriasonline.es/en/car-batteries)
- [L3 car batteries](https://bateriasonline.es/en/l3-car-batteries)
- [What battery does my car need? Guide by model](https://bateriasonline.es/en/car-battery-by-model)

Updated: 9 November 2026 · Source: battery application data by engine (KType TecDoc), the same data our number plate search uses, plus the datasheet of each battery.

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*bateriasonline.es — Batteries and accessories · 2026-11-10*