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...

Why is our FIAT 500 TwinAir returning just 30mpg?

I badly need your help. We bought a FIAT 500 TwinAir recently because it’s a quirky car, has no road tax, is Congestion Charge-free and we were told it would do 70mpg by the FIAT dealer. We are most disappointed...

Why is my Mazda 6 returning just 40mpg when it is advertised as returning up to 52mpg?

I bought a Mazda 6 estate 'Takuya' edition in September 2010. It’s a 2.2TDi (163ps) with an advertised mpg of 40.9 urban and 52.3 combined. Given the rising price of fuel, the mpg performance was a key...

Why is my Honda Civic hybrid returning just 37mpg? Are hybrids useless?

Are hybrids pointless? I have a Honda Civic 1.4 IMA hybrid. It returns less than 37mpg, confirmed by the trip meter and by calculation. I've contacted Honda, who declined to take any action, citing all...

Did my Mercedes-Benz dealer alter my tyre pressures to improve fuel economy?

I purchased a new Mercedes-Benz E220CDI in December 2009. In January I received a call from the dealership asking me to take the car in for a warranty job to be carried out. I took the car in and waited...

Why does my Alfa Romeo MiTo only achieve 75 per cent of its quoted mpg figure?

I know from what you have written that official fuel economy figures are unachievable, but does there come a point at which they are misrepresenting the car? I bought an Alfa MiTo in August (pre-reg but...

My test indicates that using cruise control can reduce fuel economy by approximately 10 per cent.

Your correspondents ask about the relative fuel consumption of cruise control versus manual driving. I have recently driven three return journeys from Cambridgeshire to South Devon, in my Honda Accord...