Lower CO2 for new Mazda5 25 January 2010 by Parkers 15% emissions cut compared with 2.0-litre petrol Stop-and-start on 2.0-litre; 2.2-litre diesel expected Styling features aid aerodynamics Mazda will unveil a new version of the Mazda5 people carrier in March with the promise of lower CO2 emissions across the range. The compact seven-seater will go on sale in the UK later in 2010 and as well as new diesel engines - expected to be the 2.2-litre motor found in the latest Mazda6 and Mazda3 - Mazda will introduce its i-Stop automatic stop and start system on the 2.0-litre petrol engine. The Mazda5 is rare in the compact people carrier sector in offering sliding rear passenger doors and these are maintained for the new model. However, Mazda has also introduce a dramatic looking new styling feature with prominent waves in the bodywork along the side of the car, which are said to improve aerodynamics.Entry level versions of the car will come with a 1.8-litre petrol engine which comes with a six-speed manual transmission. The 2.0-litre i-Stop model also comes with a six-speed gearbox, and has the ability to save fuel by automatically switching the engine off when stopped in traffic, and restarting again in a fraction of a second when the driver is ready to move. Diesel versions are expected to use the new 2.2-litre engine that was introduced in the Mazda6 at the beginning of 2009, and will offer customers a choice of power outputs. Although there might not be a significant reduction in CO2 emissions compared with the outgoing 2.0-litre diesel, they will offer drivers more power.