Second Hand Mercedes-Benz CLA Battery

The CLA ran in two clear generations: the first-generation (C117) covered 2013 to 2019, and the second-generation (C118) launched in 2019 onwards, with the two using different platform underpinnings and potentially different battery specifications. Because batteries are spec-driven rather than model-driven, what matters is matching the physical size, voltage, cold cranking amps (CCA), and any start-stop (AGM/EFB) requirement rather than which generation the donor car belongs to. Confirm the exact battery spec against your registration with the breaker before buying, as crossing the C117-to-C118 boundary is where differences are most likely.

Engine size alone does not determine battery fitment on the CLA — what matters is the physical group size, voltage (12V), capacity (Ah), cold cranking amps, and whether your car requires an AGM or EFB battery (common where start-stop is fitted). A battery from a diesel CLA could physically and electrically suit a petrol CLA of the same generation if the spec matches, so focus on those figures rather than the engine code. Ask the breaker to confirm the spec against your registration to be sure.

Trim level does not affect battery fitment on the CLA — AMG Line, Sport, SE, and other trim variants all use the same battery specification within a given engine and generation combination. You may find minor cosmetic differences between donor cars (different interior or exterior parts), but none of that has any bearing on whether the battery itself will fit and work in your car. Confirm the spec (Ah, CCA, AGM/EFB type) against your registration with the breaker rather than worrying about which trim the battery came from.

The first-generation CLA (C117) received a facelift in 2016, but both the pre-facelift and post-facelift versions sit within the same C117 generation running from 2013 to 2019. Battery fitment is driven by the electrical specification — capacity, CCA, and AGM/EFB type — rather than by whether the donor car is pre- or post-facelift, so a matching-spec battery from either side of the 2016 refresh can be suitable. Confirm the exact spec against your registration with the breaker before purchasing to make sure.

You need to match the voltage (12V), capacity in amp-hours (Ah), cold cranking amps (CCA), and crucially whether your CLA requires an AGM (Absorbent Glass Mat) or EFB (Enhanced Flooded Battery), as most CLA models fitted with start-stop technology need an AGM and will not be properly served by a standard flooded battery. The physical size group (usually a BCI or EN group code) must also match so the battery sits correctly in the tray and the terminals align. Give the breaker your registration so they can confirm the correct spec from the donor vehicle.

Because batteries are spec-driven rather than model-driven, a battery from another Mercedes model such as the A-Class or B-Class could be compatible with your CLA if the physical dimensions, capacity (Ah), CCA rating, and battery technology (AGM or EFB) all match. Mercedes models from the same era often share battery specifications, which makes cross-model sourcing a realistic option that breakers are experienced with. Confirm the spec against your CLA's registration with the breaker rather than assuming compatibility based on brand alone.