BMW Group products are officially the cleanest premium cars following independent, industry-wide research into carbon dioxide emissions.

According to www.cleangreencars.co.uk, the consumer website which gives advice on green motoring, shows that through the group’s EfficientDynamics programme, the BMW brand has the most improved average CO2 emissions of any premium manufacturer.

A report into average total model range emissions for car manufacturers found that from the period January to June this year, BMW recorded an average of 161.64g/km.

By comparison the model range averages for Audi and Mercedes were 177.36g/km and 192.85g/km respectively. Lexus only managed an average of 194.85g/km even with its hybrid model line-up. Jaguar topped 200g/km and Porsche recorded 275.64g/km.

BMW also came out on top when looking at the percentage improvements for premium manufacturers over the same time frame. BMW improved its average emissions by 11.34% compared with Audi, which improved its range average by 5.78% and Mercedes, which improved its emissions average by 4.13%.

BMW Group’s Mini brand also improved its CO2 emissions output using its own equivalent to Efficient Dynamics, Minimilism. As a result, the Mini model range now has an average of 139.64g/km for the period January to June 2008.

Jay Nagley, publisher of www.cleangreencars.co.uk, said: “The BMW and Mini model ranges have seen very significant improvements when it comes to CO2 emissions. The BMW Group should be praised for its leading stance in this area. It’s proof that driving dynamics can go hand-in-hand with a green conscience.”

BMW said it will continue to reduce its car emissions ahead of European Union guidelines and is already finalising work on engines which will meet EUVI legislation changes for 2014.