Fuel economy

I want more mpg from my Mercedes-Benz E320 CDI - is a bolt on chip the way to go? Some manufacturers say they improve mpg by 20% but is it true?

Why is my Mercedes-Benz so thirsty?

Three weeks ago I bought a 10-month-old Mercedes-Benz B160 auto from a Mercedes dealership with 10,000 miles on the clock. I have been depressed by the high fuel consumption. I am quite a conservative...

My Mercedes-Benz C-Class turbo has failed - is this normal?

I have a Mercedes C220 CDI coupe (2.1-litre), which will be six years old next month and has done just under 50,000 miles. A couple of days ago, while driving along a motorway, I felt a loss of power and...

Found out my Mercedes-Benz C-Class is ex-rental. Do I have grounds for complaint?

I bought a 2011 Mercedes-Benz C250 Bluefficiency Sport CDI Auto with 13,800 miles three weeks ago from a Mercedes dealer for £24,000, which I think is pretty much full retail. My initial feeling with the...

Petrol or diesel C-Class?

I do 15,000 miles a year, daily 15 or less round trips, with 70 mile runs about once a fortnight and longer holiday runs. I have run a Mercedes C220 CDI auto for 9 years, now on 135,00 miles and now considering...

Why won't Mercedes-Benz replace the SBC unit in our 2004 E320?

Mercedes-Benz has confirmed via diagnostics that the SBC unit on our 2004 E320 CDI has gone. I am aware there have been problems with this unit, possibly even a recall. Mercedes-Benz has offered to go...

Diesel or Petrol?

Our three-year-old A160 petrol is coming to the end of its contract, and we've been offered a diesel version at a very good price on the same finance basis. The current commute is about 85 miles per day...

Shell diesel fuel pricing

I follow your advice in the Telegraph to avoid buying supermarket fuels and buy Shell as you recommend because of the ad alwaysditives therein. However, there are two grades of diesel sold in my local...

can you recommend a suitable, powerful replacement for my Octavia Estate vRS?

I currently own a 2005 'old shape' Skoda Octavia Estate vRS. It has been a great car with plenty of performance, and is totally reliable and flexible. I fancy a change and will appreciate your advice on...

I recommend Mercedes-Benz owners with power loss problems check their air mass sensors.

In answer to GB's problem with his E-Class Mercedes losing power on acceleration, I suggest he checks the air mass sensor. I had the same symptoms on my 1998 Mercedes-Benz C240, which, on acceleration,...