Why has Shell's 'fuel saver' diesel increased my Chevrolet Cruze's consumption from 29.4mpg to 27.86mpg?

I have now run a Chevrolet Cruze diesel auto for over one year. Since Shell introduced "Fuel saver" diesel, my consumption has increased to 27.86 mpg average over the past 1,138 miles i.e. five tankfuls,...

Should my Ford Mondeo be returning better fuel economy than just 47mpg?

I purchased a new Ford Mondeo 2.0 Duratorque TDCI (115PS) 6-speed manual in October last year. The car has now done 6,500 miles. The Ford brochure indicates fuel consumption of: Urban 44mpg, Extra Urban...

Why are your correspondents surprised that they can't match their car's official mpg figures?

Your letter-writers often complain that they can't match their car's official EC mpg figures. Surely it's common knowledge (or ought to be?) that these are measured while the car is driven in accordance...

Why don't you set up a database of real fuel economy figures supplied by your readers?

I was interested to read Andrew English bemoaning the fuel consumption of the Ford S-Max 2.0 diesel automatic compared to the quoted figures. He struggled to get 40mpg from a car supposed to achieve 47mpg...

What do you think of the current BMW 520 saloon?

It’s time to replace my noble BMW 520iSE manual saloon, now with 96,000 on the clock and it has not missed a beat. The big question is whether anything has arrived to rival the new model? I’m tempted to...

Should Volvo be reported to Trading Standards over their fuel economy claims?

If you take a look at Volvo's main website, the whole focus is where you could travel on a tank of fuel (800+ miles). Surely this is almost an issue for the Trading Standards office? I like the car but...

Is it credible that the new Mercedes-Benz CKS 350 petrol returns 40mpg?

I was surprised by the fuel consumption claim of 40mpg combined for the new Mercedes-Benz CLS 350 petrol model. I think the old model 320CDI was 36mpg combined (37.2mpg on 245 rear tyres). I have a 5-year-old...

Is it true that the FIAT 500's fuel economy will improve once the car is fully run in?

I have heard a lot of complaints from friends and acquaintances who own FIAT 500 TwinAir cars. The complaint is over fuel consumption. Most people seem to get about 30mpg. I went with my daughter to the...

Why can't my wife's Mercedes-Benz A160 compete with my Audi A4 for fuel economy?

My wife and I drive between West Cornwall and Ealing, 570 miles return with all but 10 miles on motorways and dual carriageways, cruising at an indicated 75 mph in an Audi A4 3.0 litre diesel Quattro Tiptronic,...

Why is our Land Rover Freelander 2 returning just 32mpg?

We purchased a brand new Freelander 2 MY2011 TD4 manual three months ago. Against a claimed combined fuel consumption figure of 45.2mpg, we are getting an average of 32.1mpg. We live in the country and...