Varta A6 · Start-Stop battery 12V 80Ah 800A AGM

Varta A6: car battery 12V 80Ah 800A AGM Start-Stop

The Varta A6 is a 12 V, 80 Ah, 800 A AGM car battery from the Dynamic AGM range, built for Start-Stop cars with heavy electrical loads (regenerative braking, cameras, climate control at idle). 315 × 175 × 190 mm case, positive terminal on the right. It works in a car without Start-Stop, but is not needed there: a conventional battery will do.

In short: the Varta A6 (80 Ah, 800 A, 315 × 175 × 190 mm, positive terminal on the right) is one of the 5 best-selling batteries at baterias.com over the last 3 months, rated 4.61 out of 5 by 18 customers. It is an AGM battery for cars with Start-Stop and regenerative braking; if your car came with AGM, always replace it with another AGM. Verified equivalent alternatives: Tudor TK820 and Exide EK820.

Vehicles compatible with the Varta A6

According to our database, the Varta A6 is compatible with more than 410 vehicles. Car makes that use it include Mercedes-Benz, BMW, Audi, Ford, Opel and Volvo: it is a go-to option when you need a battery for Mercedes-Benz, BMW or other models with this same format. It also appears as a replacement in models from Vauxhall, Volkswagen, Chevrolet, MINI, Porsche, Alpina, Jaguar and GMC, among other manufacturers. It covers more than 210 original-equipment references.

Which cars the Varta A6 goes in: what our orders say

Since April 2026, 193 buyers of the Varta A6 have told us the registration or model of their car, so this is no theoretical list: these are the cars it is fitted to most often. Mercedes-Benz C-Class C 220 BlueTEC / D (2016–2021, 11 orders); Hyundai Tucson 1.7 CRDi (2015–2018, 5 orders); Audi A4 B9 2.0 TDI (2016–2019, 5 orders); Mercedes-Benz A-Class A 180 CDI / d (2013–2018, 5 orders); Mercedes-Benz C-Class C 220 CDI (2014, 4 orders); BMW 1 116 D (2010–2016, 4 orders); Mercedes-Benz A-Class A 180 d (2019–2021, 4 orders); Ford Transit Custom V362 2.0 EcoBlue (2017–2018, 3 orders); Volkswagen Transporter T6 2.0 TDI (2017–2024, 3 orders); Mercedes-Benz CLA Shooting Brake CLA 180 D (2017–2018, 3 orders). By make, it is bought most for Mercedes-Benz, Opel, BMW and Ford.

If you are not sure the A6 is the one for your car, enter your registration in the battery finder by number plate or read our guide which battery does my car take: it takes a minute.

Format and fitting of the Varta A6

The Varta A6 measures 315 × 175 × 190 mm (length × width × height) and weighs 22.56 kg, with the positive terminal on the right and a B13 hold-down ledge. Before ordering the A6, compare these dimensions and the side of the positive terminal with your current battery; if in doubt, we explain how to find the positive terminal of a battery and how to change a car battery step by step.

Varta A6 versus Varta N80, Tudor TK820 and Exide EK820

If you are torn between the Varta A6 and the other 315 × 175 × 190 mm batteries we sell most, these are the real differences, with October 2026 prices:

• Varta N80 (80 Ah, 800 A, EFB): EFB for basic Start-Stop: it does not replace an AGM like the A6 if the car left the factory with AGM; 126.30 € VAT incl., 23.65 € less than the A6.
• Tudor TK820 (82 Ah, 800 A, AGM): the verified Tudor equivalent in the same size and 2 Ah more; 121.30 € VAT incl., 28.65 € less than the A6.
• Exide EK820 (82 Ah, 800 A, AGM): the verified Exide equivalent in the same size and 2 Ah more; 119.20 € VAT incl., 30.75 € less than the A6.

In short: if your car left the factory with an AGM battery, the Varta A6 is the right one; do not drop to EFB or conventional to save money, it will last far less.

The Varta A6 used to belong to Varta's Silver Dynamic AGM range; following the brand's change of commercial naming (2025), it now forms part of the new Dynamic AGM series.

What buyers say about the Varta A6

The Varta A6 has an average rating of 4.61 out of 5 from 18 verified purchase reviews (October 2026). Three reviews of the A6, exactly as they were left:

“Fitted to a 2017 Mercedes GLA 200d doing about 30,000 km a year. Perfect fit in the housing. All good so far and the Start-Stop works without a hitch.”

— Pedro P., Mercedes-Benz GLA 200 d (2017) (translated)

“Top-marks battery, fitted to a 2012 Opel Insignia with 200,000 km and Start-Stop; starts first time in the cold and fits the tray perfectly. The previous one lasted 4 years.”

— David G., Opel Insignia (2012), 200.000 km, Start-Stop (translated)

“I swapped it myself in no time, no faults or problems on my Renault Laguna 3 2.0 dCi. Starts first time, hot or cold.”

— Iker A., Renault Laguna III 2.0 dCi (2011) (translated)

Buying the Varta A6 at baterias.com

As an official Varta distributor, the Varta A6 costs 149.95 € VAT incl. at baterias.com (October 2026 price; if it changes, the price on this page prevails). Order the A6 before 18:00 (mainland Spain time) with "urgent delivery" and it arrives the next working day before 17:00 in mainland Spain and Portugal; other lead times are in the delivery terms. Besides the A6 you can browse all Varta batteries or the rest of our car batteries.