Ask Honest John

Most recently answered co2 emissions questions
It's time to replace my company lease car again. My choice of car has to meet a tight window of requirements, balancing weight (for pulling a large caravan), economy for the 90 per cent of time I am not...
Much is made of the low carbon dioxide emission needed to meet various targets and the drive towards zero emission objectives through all electric vehicles, using technologies such as fuel cells etc. Most...
My Volkswagen Golf 1.6 Bluemotion estate, two months old, has done 2,500 miles. This car should do 54/67/78 to the gallon. It does 40mpg round town and maybe 50mpg on a run (A-roads at 60mph). Volkswagen...
Having owned and run a 1991 Land Rover Defender since passing my test at 17 four years ago, I was pleased to see the article a few weeks back in favour of older cars as first cars. The Landy has provided...
I need to replace my Volvo S80 and have been looking at the new, very fuel-efficient diesel engine cars (Blue Motion, Greenline, Volvo Drive-e etc). But the problems with DPFs and dual mass flywheels are...
My Peugeot 307 1.6 diesel has just failed the MoT on emissions. There are no warnings on the dash and my mechanic is unsure of where to start to fix the problem. The average smoke reading is 3.28 (pass...
How much is the 12-month road tax renewal for my 2001 Renault Espace likely to cost me?
I have a 06-reg Kia Rio which is displaying a sign saying "Check" which, according to the handbook, relates to the emission control system. I have not detected any change in the performance of the car...
On 7 July 2010 you stated that the Vauxhall Insignia 2.0 CDTI 160PS model now benefits from CO2 emissions of 144g/km. Can 2009 cars be remapped to achieve this?
I'm considering buying a 2007 Alfa 156 Selespeed Twinspark (1970cc). This is one of a small number of twinsparks that were sold by Alfa after the introduction of the JTS engine. I believe the CO2 emissions...
 

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