Why is my Audi A6 TDI's fuel economy so poor?

The fuel economy of my 2007 Audi A6 2.0TDI Avant Multitronic has always been poor from new at 34mpg, rising to 40 in mid 2011 and now having dropped steadily back to 33mpg. Most of my mileage consists...

Does using air conditioning affect fuel economy?

The debate has started again as to whether using the air conditioning is more fuel-efficient than having the windows down. Which is correct?

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...

Petrol consumption on a Hyundai i10

I have bought a 2009 Hyundai i10 auto 1.2-litre I am 72 years old drive very carefully (advanced driver) no mater how careful I am the range of the i10 is in the region of 260 - 290miles on 35L of petrol. What...

Fuel consumption on a Kia

Please note the 67.3 mpg combined you show and Kia show in the information for this model I believe is not attainable in normal driving if there is such a thing. I did a test as recommended by the garage...

MPG affected by changing my battery?

I own a Ford Focus 05 1.6 90bhp, I recently changed the battery and mpg has risen via EMC can I get it back to the lower figure by reconecting battery again, or is it a dealer issue. Also do you know if...

Which petrol should I choose?

I run a Ford Mondeo 1.8 estate (Dec 2005). It has done 55,000 miles. I cover around 5,000 miles per year - much local but with 300 mile motorway journeys three or four times a year. I really like the car...

Buying used diesel estate/hatch that will not depreciate with high personal miles

I am looking for a used small estate car or square ended hatchback which has good mpg which will not depreciate massively. I will drive the car 110 miles a day for my work commute so it need to be economical,...

Eco-tuning

I have received a flier for an ECU-remapping service claiming to improve fuel consumption by up to 20% - www.ecu-remapping-service.com. It is not cheap, about £250.00, but as I do 20,000 miles per year...

Belt or chain cam?

I am considering buying a Polo 1.2TDI (Not the BlueMotion). Is it chain-cam? I assume as a three cylinder diesel it is a little rough and noisy, but is there anything else against it as the mpg figures...