Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

New Mercedes A Class: A 180 BlueEFFICIENCY Edition models launch

Mercedes are launching two new eco versions of the new A Class – the A 180 CDI BlueEFFICIENCY Edition and A 180 BlueEFFICIENCY Edition. Mercedes has had a play with the aerodynamics on the new A Class to lower the Cd value from an already very low 0.27 to 0.26 by partially covering the upper section of the radiator grill, adding aerodynamically shaped spring link coverings that improve the flow of air along the underbody at the rear axle and lowering the suspension by 15mm. Mercedes has also tweaked the generator management for more efficiency and had a play with the gearbox to make the ratios longer (which will help economy, but won’t do much for responsiveness).

Renault is reviving the Gordini name for high-performance models

They don't sell Renaults in the United States anymore, but it's worth noting that the French automaker is reviving the Gordini name for high-performance versions of the Twingo and the Clio. The name pays homage to Amedee Gordini, a mechanical whiz known as "the sorcerer" for taking production-car engines and making them competitive on the great racetracks of Europe. The Gordini versions of the Twingo and the Clio will wear the trademark light blue paint with a pair of white stripes running from nose to tail and centered over the driver.

Why the BMW M4 is better than the M3 V8 (2013)

It’s no exaggeration to say that the turbocharged engine in the upcoming BMW M3 (saloon) and M4 (coupe) models is one of the most important engines ever produced by BMW’s M Division. No, it’s not the first turbo lump the performance off-shoot has built – you'll probably know we’ve already had the X5/X6M mutants plus the brilliant 1M and M5 and M6 – but it is the first turbo ever to slot in a production M3, the car that personifies BMW’s iconic performance sub brand, which itself has always been defined by high-revving, naturally aspirated engines. All of this explains why M’s engineers have cut their teeth on other engines first before plucking up the courage to develop the M3/M4 turbo while turning their backs on the outgoing E92 M3’s exceptional V8.