Used Mercedes-Benz EQS Brake Servo

No — the EQS is a fully electric vehicle and does not have a conventional vacuum brake servo. Like most modern EVs, it uses an electro-hydraulic or fully electric brake booster system (often called an iBooster or similar electrohydraulic unit) rather than a traditional vacuum servo, because there is no combustion engine to generate vacuum. If you need the braking assistance unit on an EQS, you should be asking breakers for the electric brake booster or electrohydraulic brake actuator, not a brake servo. Describe your fault or the part you've removed to the breaker so they can match the correct unit to your registration.

The part you're most likely looking for is the electric brake booster or integrated brake control unit — on the EQS this is an active electro-hydraulic assembly that replaces the function a vacuum servo performs on petrol or diesel cars. When contacting a breaker, give them your full registration number so they can confirm the exact unit fitted, as the specific assembly can vary between EQS variants (such as 450+ rear-wheel drive versus 580 4MATIC). Do not order based on part photos alone, as these units look quite different to a traditional servo.

Trim level alone (AMG Line, Executive, Luxury) is unlikely to change which brake booster unit is fitted, as running gear components on the EQS follow the drivetrain and power output rather than interior or cosmetic specification. However, drivetrain does matter — a rear-wheel-drive EQS 450+ and an all-wheel-drive EQS 580 4MATIC may carry different braking system hardware given the difference in power and weight distribution. Always confirm the unit against your exact registration with the breaker rather than relying on trim name alone.

The EQS (V297 series) launched in the UK in 2021 and received updates during its production run, and it is possible that the specification of the electrohydraulic brake unit changed during the model's life. Because this is the kind of mid-generation change that cannot be confirmed with certainty here, you should give the breaker both your registration and the registration of the donor car so they can cross-reference part numbers before you commit. Assuming any EQS brake booster will swap directly into any other EQS without checking is not advisable.

The EQE and EQS share the same EVA2 electric vehicle platform and some engineering commonality, so it is not impossible that some brake system components overlap — but the EQS is a larger, heavier car and differences in braking system sizing or calibration may mean the parts are not interchangeable. This is exactly the kind of cross-model substitution you should put directly to the breaker, quoting both registrations and asking them to verify part numbers match before purchase. Never assume platform sharing means identical parts.