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

Future products: Infiniti adds models at top, bottom of lineup

In an effort to broaden its product coverage, Infiniti will launch a more expensive model and a less expensive one. The brand also will get two alternative powertrain technologies next year. G25: The luxury marque's entry-level sedan will go on sale this month in a bid to reach deeper into the near-luxury segment.

Toyota’s Take On Personal Transport Hits The Streets

JAPANESE car maker Toyota has launched the first public trials of its ultra-compact i-Road electric three-wheeled ‘personal mobility vehicle’ to find out how it shapes up in the cut-and-thrust of real-world urban driving. Consumer testing in Tokyo is set to run through to early June, with 10 of the single-seater vehicles taking to the city streets. The 20 people involved in the programme range from industry experts through to members of the general public, so that Toyota can gain a wide range of feedback on what the i-Road is like to drive, how easy it is to use around town, how it affects people’s decisions about what journeys to make.

Porsche Cayenne S Diesel: The V8 diesel Cayenne arrives

Porsche has revealed the 2013 Cayenne S Diesel with a 4.2 litre V8 diesel offering 378bhp, 626lb/ft of torque and 0-62mph in 5.7 seconds. Back in April we reported that the Porsche Cayenne S Diesel was on its way with a V8 diesel engine to take on the BMW M50d and the upcoming offerings from Land Rover with a 2014 4.4 litre Range Rover Sport seeming a likely possibility. Now Porsche has caught up and revealed the Cayenne S diesel, which gets the 4.2 litre diesel V8 with a healthy 378bhp and a very useful 626lb/ft of torque, enough to scoot the Cayenne S Diesel to 62mph in 5.7 seconds – a bit slower than the M50d, but all that torque should make it feel at least as lively.