Why Choose John haynes mercedes?
Located in Worthing, John Haynes Mercedes proudly serves Mercedes-Benz owners across Sussex, including East Grinstead, Haywards Heath, Brighton, and Horsham. Many customers from East Grinstead choose us for our exceptional service and expertise. They trust John Haynes Mercedes to provide their vehicles with the specialist care they deserve, backed by years of experience in the industry.
Mercedes-benz servicing
At John Haynes Mercedes, our service department brings decades of specialised knowledge and experience to every Mercedes-Benz we care for. Our certified technicians possess in-depth expertise across all Mercedes models, from classic vehicles to the latest innovations, ensuring comprehensive mastery in all aspects of vehicle care.
Each technician is fully trained and certified by Mercedes-Benz, ensuring that our team consistently meets the high standards required for your vehicle. You can count on us to deliver the expert service and repairs that your Mercedes-Benz deserves.

mot
Our MOT testing facility is designed to meet the specific needs of Mercedes-Benz vehicles with precision and expertise. Our certified MOT testers are well-versed in Mercedes-Benz engineering standards, ensuring your vehicle receives the most thorough and accurate assessment possible.
If any remedial work is needed after the MOT inspection, our qualified technicians will use only genuine Mercedes-Benz parts and approved repair methods. This ensures that your vehicle maintains its high safety standards and performance characteristics while complying with all legal requirements.
repairs and diagnostics
At John Haynes Mercedes, we combine the latest technology with expert knowledge to offer precision repairs and diagnostics for every Mercedes-Benz. Our certified Mercedes-Benz Master Technicians specialise in complex diagnostics and intricate repairs, using factory-approved diagnostic equipment and genuine Mercedes-Benz components.
Whether it’s electrical faults, mechanical issues, or software malfunctions, our specialists apply decades of experience and manufacturer-approved procedures to restore your vehicle to its intended performance, ensuring it continues to provide the outstanding engineering that defines Mercedes-Benz.
Posted on Google
navid alizadeh
Another Job was done with John Haynes on my Sl320 (1998) a gearbox oil service, also they observed a fuel leak and resolved incredibly fast and they are the most knowledgeable Mercedes specialist I know so far! Thanks to David and Chris. Very grateful!Posted on Google
Aimee Lister
Great helpful servicePosted on Google
John McMillan
Great service, reliable, they really know their cars and fair with prices.Posted on Google
Jonathan K
After finding John Haynes I simply would not take my car anywhere else now. Their knowledge and ability to diagnose and fix issues has been A1. Each time I get my car back it feels like a brand new car. Both Chris and David are super helpful in explaining the work needed and providing accurate quotes and estimates which come in on budget. Professional, honest and friendly team who offer a great customer service experience. Having taken my car in again recently due to a knocking from the suspension the issues were correctly diagnosed and fixed and the car drives like new again.Posted on Google
Stephen
Exceptional servicePosted on Google
Karen Adsett
David was very helpful and they looked after our pet ambulance, very fast in fixing the problem with our 2018 c class estate. Definitely worth 5 stars, wish i could give 6 starsPosted on Google
Simon Wright
Their customers service is excellentPosted on Google
Victor KJR
I bought an R129 SL320 in 2001 - the car had been serviced by John Haynes for many years, so I decided to start using them for reasons of continuity (they’re around an hour from home). I sold that car in 2023, missed my R129 so ended up buying another one! Overall, across the 2 cars, I have used John Haynes on several occasions for servicing and repair work - each time, I have found their work to be of top quality - and a special mention for David Sandell, the Service Manager (a non workshop role as the interface between the customer and the technicians). David is very knowledgeable, extremely helpful and friendly. Very highly recommended. 5*Google rating score: 4.8 of 5, based on 156 reviews
To book your vehicle in with John HAYNES MERCEDES
Call us on
01903 500 000