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

Vuhl 05 is a Mexican Ariel Atom – costs from £66,000

The Vuhl 05 (pictured), track-focused road car, has been revealed The Vuhl 05 – which has been teased recently – was unveiled this afternoon in London as Mexico’s answer to the Ariel Atom. The Vuhl 05 uses a bonded monocoque with honeycomb panels and aluminium covered on plastic panels to keep weight down to just 695kg. That means that even though the Vuhl 05 has only 285bhp available from its mid-mounted 2.0 litre turbo Ford EcoBoost engine, it can still get to 62mph in 3.7 seconds thanks to a power to weight ratio of 400bhp per tonne.

VW Polo R-Line Style & more equipment across Polo range

Volkswagen has introduced the VW Polo R-Line Style – price from £11,740 – in the UK and added more equipment across the Polo range for 2013. We though that VW had done the R-Line thing with the launch of the Polo R-Line this time last year, but it seems the bean counters at Volkswagen have worked out there’s room for a Polo R-Line ‘Light’ in the range, so we now get the VW Polo R-Line Style. That’s because VW decided that, unlike most of the VW range where the R-Line is an add-on pack for any model, the Polo R-Line only comes with the 1.2 litre 105PS engine – albeit in 3-door or 5-door guise – so you can’t have a more butch-looking R-Line with ‘lesser’ Polos.

Toyota Unveils new Prius at Detroit Auto Show: Bigger, with more power and less weight

Toyota introduced its third-generation Prius at the Detroit Auto Show with an extensively re-engineered hybrid drivetrain. Ninety percent of the Prius's hybrid synergy drive system has been redesigned, with the focus on weight reduction. The lighter components include the transaxle to cut down on torque loss, inverter with direct cooling and smaller motor.