I've got a 'Check' warning coming up on my Kia Rio's dash.

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...

Can the Vauxhall Insignia be remapped for better CO2 emissions?

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?

What is the correct VED rate for my 2007 Alfa Romeo 156?

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...

Is your table regarding tax bands for the Porsche Cayenne still accurate?

Is this table still accurate? www.honestjohn.co.uk/road-tax/porsche/cayenne-2003 According to the DVLA website below, band K includes cars that have a CO2 figure over 225g/km but were registered before...

Which 2008 saloon car meets Irish emissions requirements?

What would be a recommended 2008 saloon car to purchase that will fulfil these requirements: diesel engine 1.9l to 2.2l, low C02 emission (<140 g/km, maximum of 155g/km), 130-150bhp, six-speed gearbox...

Which low-emission MPV could I buy to replace my Vauxhall Zafira?

I am considering selling my 2005 Vauxhall Zafira B 1.9CDTi automatic and buying an alternative MPV with less CO2. Which automatic is best to buy? I don't mind if its a petrol car.

Are the CO2 emissions recorded wrongly for my partner's Volkswagen Eos?

My partner has a Volkswagen Eos 2.0 TDI 140 PS DSG and I have a Volkswagen Passat Estate 2.0 TDI 140 PS Manual. She pays £200 a year car tax and I pay £155. We did wonder why the car tax should be different....

What's causing my Audi A4's emissions problem if not the lambda sensor?

I have an Audi A4 2.0 FSI automatic, registered in September 2004 with 23,500 miles. It went for its annual service and MOT to a local Audi dealer and failed the MOT due to emissions. They said it needed...

Should I replace my Toyota Yaris with a Volvo C30?

I have a Toyota Yaris 1.4M D-4D TR which I bought new in 2008. I have been pleased with the car, except for its lack of pulling power going up hills. For this reason I am thinking of buying a Volvo C30...

Must I take my 2001 Vauxhall Corsa to a dealer to have an emissions warning investigated?

I have a 2001 Vauxhall Corsa three-cylinder with about 70,000 miles on the clock. The emissions light has come on and stayed on. It seems to run OK - no coughing and spluttering. My local garage has done...