Mercedes-Benz EQB Brake Servo Replacement Parts

No — the EQB is a fully electric vehicle and does not have a traditional vacuum-based brake servo. Instead it uses an electro-hydraulic brake booster (sometimes called an iBooster or electric brake booster unit) which performs the same function but is electronically actuated rather than relying on engine vacuum. If you need the unit that assists your braking effort on an EQB, search for 'electric brake booster' or 'electro-hydraulic brake booster' rather than 'brake servo'. A good breaker will know which unit you mean once you explain it's the EQB.

No — the EQB's brake assistance system is fundamentally different from the vacuum-based servo found on petrol or diesel GLA and GLB variants. Those combustion-engine models use engine vacuum to operate a conventional servo, whereas the EQB uses an electric brake booster because there is no engine vacuum available. The two units are not interchangeable, so you need to source the correct electric brake booster unit from an EQB donor car specifically.

Trim level and colour do not affect brake booster fitment, but the drivetrain and power output may well do, since higher-output 4MATIC variants are heavier and produce more power than the single-motor EQB 250. It is worth confirming with the breaker whether the unit from the specific variant they're breaking matches your own vehicle's motor configuration, quoting your registration. Never assume a part fits based on model name alone.

The EQB is a single generation model that arrived in the UK in 2022, and there are no widely established facelift or generation boundaries at the time of writing that would be confirmed as creating a fitment break. However, Mercedes-Benz does make running production changes to electric vehicle brake systems during a model's life, so it is always worth checking with the breaker that the unit they have comes from a car of the same year and specification as yours. Quoting your registration to the breaker is the safest approach.

Ask specifically for the 'electric brake booster' or 'electro-hydraulic brake unit' from a Mercedes-Benz EQB, giving the breaker your registration number so they can check the exact part number against their donor vehicle. Avoid using the term 'brake servo' as it may lead to confusion with vacuum-based units from petrol or diesel cars. A reputable breaker will be able to cross-reference part numbers to confirm compatibility before you commit to buying.