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

Ferrari LaFerrari vs McLaren P1: the stats and specs battle

Arch rivals Ferrari and McLaren have both revealed their new hypercars at the 2013 Geneva motor show today. Both produce over 900bhp and 650lb ft, hit 62mph in under three seconds, top 217mph, and cost nearly £1m. When we drive both cars in the coming months their different characters will no doubt be revealed, but for now here's how the pair match up head-to-head...

MAZDA5 RESIDUAL PERFORMANCE IS 'BEST KEPT SECRET'

A NEW diesel version of the Mazda5 MPV has stormed onto the market with the best residuals in its class. Used car valuation expert CAP has described the 1.6-litre diesel model as a "best kept secret" and has predicted that the Sport model will retain 32 per cent of its value after three-years and 60,000-miles. The TS2 model also performs extremely well, with a 31 per cent retained value predicted.

OFFICIAL: Alfa Romeo 4C laps the Nurburgring in 8:04s

The Alfa Romeo 4C (pictured) laps the Nurburgring in 8:04s We wouldn’t normally report on a car lapping the Nurburgring in around 8 minutes; after all, the Nurburgring lap record for a full production car is sub-7 minutes, so 8 minutes seems almost a stroll. But the lap time round the Nurburgring for the Alfa Romeo 4C is worthy of note because it’s a new lap record for a production car with less than 250bhp, and puts the Alfa 4C very much on the map as a performance car. We’d heard rumours a few weeks ago that Horst von Saurma has managed the impressive time in the 4C round the Nurburgring, but Alfa has now confirmed the time – with the 4C shod with road-legal Pirelli Zero Trofeo tyres – was completed on 23rd September 2013.