07 08 09 10 Mazda Cx-7 Air Cleaner 2.3l Turbo Thru 08/31/09 Resonance Chamber on 2040-parts.com

BMW X3 gets a turbo four-cylinder

BMW is expanding the use of its N20 turbocharged four-cylinder engine by making it the base powerplant for the 2013 X3 SUV. The X3 xDrive28 will use the twin-scroll turbocharged 2.0-liter engine that produces 240 hp and 260 lb-ft of torque. Twin-scroll turbocharging means that the exhaust stream of cylinders one and four follow a separate path to the turbine wheel from cylinders two and three.

CAR tech: Audi's miracle e-fuel (2013)

Global warming; sky-high oil prices as reserves peak; spiralling crop prices and intense pressure to find fertile land – society faces immense challenges, as it strives to protect the planet and keep our cars on the move. Audi is working on a miracle fuel that could help mitigate these problems, in a facility under construction in the uncompromising, scorching environment of New Mexico, USA.  Not content with having a range more diverse than London’s World Pride parade, Audi is moving into the fuels business, in partnership with US biotech firm Joule Unlimited. The pair are developing carbon-neutral synthetic fuels, called e-fuels in keeping with Audi’s E-tron eco brand.

Subaru Impreza Diesel introduced

Subaru has launched the Impreza Diesel in the UK The Impreza is a great car, and slotting in the 2.0-litre Boxer Diesel is a move designed to get the Impreza a whole new market, especially as it’s coming in at a round decent Golf money – a nice round £20,000 for the Impreza 2.0D RC. The 2.0 litre boxer diesel outputs 150bhp and 258lb/ft of torque, and can do 0-60 mph in 8.8 seconds and on to 127 mph. It does 47.1 mpg and emits 155g/km CO2.