Should my new Ford EcoBoost be returning just 25mpg?

Your ‘real mpg’ figures are hugely different from what Ford says and they never told me about the EcoBoost engine taking thousands of miles before it starts to give good economy. I do lots of motorway...

Has anyone tested the mpg figures across different fuel brands?

Assuming identical driving conditions, should similar miles-per-gallon be achieved no matter which fuel company's products are used? Have results been published of such tests being carried out, comparing...

Why are the 2003 and 2009 Avensis fuel economy rates so similar?

Your real mpg lists at www.honestjohn.co.uk/realmpg make very interesting reading. I note that the real mpg values for the 2003 Avensis and the 2009 Avensis are almost the same (1.8 engine), yet the later...

Why is our Renault Scenic averaging only 26mpg?

Our 2002 Renault Scenic 1.6 automatic has clocked exactly 45,000 miles. On a recent motorway journey of 150 miles I decided to check the economy and was horrified to find it was only 26mpg. We only use...

Why is my Nissan Primera automatic only returning 18-20 mpg?

I bought a 1999 Nissan Primera 2.0i automatic two years ago. It had 9000 genuine miles on the clock. The previous owner had ongoing health issues and the car was mostly off the road and stored in a garage....

What's the mpg difference between the 1.0 ecoflex and 1.2 ecoflex engines?

I'm thinking of buying a Vauxhall Agila. Can you tell me the real mpg difference between the 1.0 ecoflex and 1.2 ecoflex engines?

Is my Venga's engine run in?

I bought a brand new Kia Venga 1.4 ecodynamics petrol at the end of October 2012 and have driven just over 3500 miles, mostly short trips but including one from Kent to North Yorkshire and return. I...

Can I reject a car over poor fuel economy?

In March 2013 I took delivery of a Kia Rio as part of the NHS lease scheme. This was chosen based on the fuel economy info from Kia and the lease company appointed by the NHS. However, since driving the...

Why are quoted CO2 emissions reducing so fast on Skoda's Octavia?

The current brochure does not list an Octavia 1.4 TSI DSG, but the Skoda on-line configurator allows you to configure one. The CO2 emissions are lower than was posted at the launch of the car. They are...

Why has Audi released inaccurate mpg figures in its brochures?

I have sent you a copy of the Audi A4 2012 brochure. In it the EC figures show the claimed improvements in mpg between the 2008 and 2012 models. In a recent County Court judgement against Audi relating...