Should Mercedes repair my out-of-warranty car?

C-Class owner asks if Mercedes should cover the cost of a fault that has returned after being fixed under warranty...

Who has What Car? helped this month - March 2018

I own a Mercedes-Benz C-Class C200 and it has just suffered its third NOx sensor failure. The first two times, the failure occurred while the car was within its warranty period; but now it has happened again, five months outside the warranty. My local Mercedes dealer told me that some other C-Class models have suffered problems with this part.

After I complained, I was told that Mercedes would cover three-quarters of the repair costs, leaving me to pay £132. However, I maintain that this is an ongoing problem that started well within the warranty and it has not yet been satisfactorily repaired, so I believe Mercedes should meet the whole cost. Is this correct? 

This C-Class is my seventh Mercedes and it will certainly be the last if nothing is done to correct this very poor customer service.

Sylvia Russell

What Car? says…

We agreed that the problem with the NOx sensor on Sylvia’s car should have been repaired when it first occurred and, because it’s a recurring fault, we believe Mercedes should cover the full cost of repairs.

So we wrote to Mercedes stating this and received a swift response stating that it would cover the full amount.

The best executive cars - and the ones to avoid

A good executive saloon needs to combine two opposing qualities: luxury and affordability. The best have efficient engines that make them cheap to run as company cars. Yet, they also have plush interiors and enough soundproofing to keep them quiet on the motorway.

Ideally, they should also offer a comfortable ride and be enjoyable to drive. Plus, they should have a user-friendly dashboard layout and come equipped with the latest infotainment and safety technology.

Read our review of the new BMW 5 Series

Here we count down our top 10 – and name the cars that are best to steer clear of.

10. Mercedes C-Class

The C-Class is one of the three main choices when it comes to executive cars, the other two, naturally, being the Audi A4 and BMW 3 Series – both of which feature further up this list. The C-Class does a lot well, too – it's got a superb interior, most engines have low CO2 emissions and you get plenty of toys as standard. The entry-level C 220d diesel makes the most financial sense, though, and pulls strongly from low revs.

Our pick: C 220d SE

Read our full Mercedes C-Class review

Find a great deal on a Mercedes C-Clas

9. Jaguar XE


Taking on the big German brands in the executive car market is a big task, but Jaguar has made a good first impression with its junior saloon, the XE. It's offered with a strong range of engines, and rewards keen drivers with excellent steering and sharp handling. It's let down a little when it comes to cabin quality, but a generous equipment list should entice company car drivers.

Mondeo Man has grown up and now expects more from his car than ever before. Fortunately, the Mondeo has grown up too, and now offers a comfortable driving experience and spacious interior to match its Germanic rivals. We'd go for the mid-range 2.0-litre diesel engine, and pair it with Zetec trim which gets you everything you're going to want, including a heated windscreen, rear electric windows and a ski hatch in the rear for carrying longer items.

Our pick: 2.0 TDCi 150 Zetec

Read our full Ford Mondeo review

Find a great deal on a Ford Monde

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