Independent Mercedes-Benz servicing and repairs

What do you do for Mercedes-Benz cars?

Reverie Autocare is an independent service centre at 57 Great North Road, Welwyn Garden City. For Mercedes-Benz owners, including V-Class and Vito drivers, we offer:

• Servicing: Service A and Service B, by the car’s service interval display.
• Automatic gearbox oil servicing for the 7G-Tronic and 9G-Tronic: see our Mercedes gearbox service page.
• Diagnosis and repair, from warning messages to leaks, suspension and emissions faults.
• MOT tests in our own Class 4 bay.

Electric and hybrid Mercedes-Benz models are looked after by technicians qualified to work on electric and hybrid vehicles.

Which engine oil goes in my Mercedes?

Oil that meets the Mercedes-Benz specification sheet listed for the engine. Mercedes publishes the sheets engine by engine, and the binding specification is the one in the vehicle’s own manual. Mercedes warns that low-viscosity oils used in an engine not cleared for them can cause engine damage, so we confirm the sheet for each car before we fill it.

Which Mercedes-Benz faults do you see?

• AdBlue and NOx sensors: an AdBlue fault message, then a countdown to “start not possible”.
• Air suspension: a car sitting low after standing, or an AIRMATIC warning.
• Auxiliary battery: the “Auxiliary battery malfunction” message, often with start-stop no longer working.
• DPF: a warning light or reduced power when soot builds up faster than regeneration can burn it off.
• Timing chain: a rattle for a few seconds after a cold start.
• 48V battery: 48V battery warnings on mild-hybrid models.
• Limp mode: loss of power and emergency running, traced to turbo, boost control or charge-air hose faults.
• Oil cooler leak: oil collecting in the V of the OM642 V6 diesel.
• EGR valve: an engine light or poor running from a valve fouled by soot and oil mist.

How do you find the cause of a fault?

A fault code is not a repair. We read the fault data, test to prove the cause, and send you a written price before any part is fitted. If we find something else, we ask for your written approval before doing it.

Should I check for a recall first?

Yes. Some Mercedes faults are covered by DVSA recalls, for example:

• Emissions software and NOx sensors: R/2019/304, R/2019/307, R/2020/231 and R/2020/243 for cars.
• Timing chain: R/2022/116, for some C-Class and E-Class built from February 2016 to February 2019.
• Coolant pump: R/2021/438, for some diesel models built from April 2017 to October 2021.

Whether a recall applies depends on the individual car, so check your registration on gov.uk. Mercedes-Benz UK’s own recall checker also shows non-safety service measures. Recall work is done by the manufacturer’s network, not by us.

Do you look after chauffeur and private hire Mercedes?

Yes. See our Mercedes V-Class page and our PCO and chauffeur servicing page. Mercedes treats regular city driving with frequent stops as arduous use that needs more frequent oil and filter changes, which can apply to private hire work.

Do you remove DPF, EGR or AdBlue systems?

No. We repair DPF, EGR and AdBlue systems and never remove or disable them. At the MOT, emission control equipment that is missing or obviously modified is a Major defect.