Are diesels still superior to petrol-fuelled cars in terms of fuel economy?

I am new to Audi but love our new A5 SB. A few thoughts. We have a 2.0T 180bhp petrol. We are getting 44.1mpg over 6000 miles, and on a recent 1000-mile mostly motorway trip, got 52.7mpg. I am the passenger...

Do any current small cars match the UK standard fuel consumption figures?

Do any of the current range of small-engined large cars - 1.6D in Citroen C5 or Volvo S80 or 1.4TSI in Passat or Superb - come close to matching the UK standard consumption figures in real-life usage?

Should my 2003 Ford Mondeo be averaging just 26-28mpg?

I have just bought a 2003 Mondeo 1.8 LX. Nice car, but what should the mpg be? It is averaging 26-28mpg and I can't get it above 30mpg even on a motorway run.

Why won't our 2010 Renault Clio dCi achieve its quoted fuel economy figures?

I'd be really interested to hear whether anyone can get close to the claimed economy for the new 98g/km Renault Clio dCi. We are running a 2010 Clio dCi 86bhp, which is supposed to deliver a combined figure...

Dodge Caliber MPG claims - are they true?

As a member of the Dodge Caliber Owners Forum I am finding some extraordinary claims being made. In normal motoring, would you expect a heavy 2.0-litre CVT car to achieve 42mpg as one member showed in...