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

2013 VW Golf TDI BlueMotion Mk 7 costs from £20,335

Starting at £20,335 for the 3-door BlueMotion and rising to £20,990 for the 5-door, the new Golf also emits just 85g/km CO2 (which would have been enough for free London Congestion charging, but not any more) which is 15 per cent better than the previous Mk 6 TDI BlueMotion managed. VW has managed to tweak the Golf BlueMotion’s economy figures still further by reducing weight, fitting super low rolling resistance tyres (that run with higher pressure), longer gear ratios, stop-start and aerodynamic tweaks. Thos aerodynamic tweaks includes modifications to the front of the Golf to reduce drag by nearly 10 per cent, adding a roof spoiler, air guide elements on the back window, a masked front grill, smoother underfloor and a reduction of ride height by 15mm.

Bertone announces latest motor show special

Bertone has revealed it will give a new one-off concept its world premiere at the upcoming Geneva motor show. There is next to no information – not even a name – about what we can expect from the Italian carrozeria's latest offering, and all we have to work from is the 'teaser' image of the car's profile. We'll be live at its official unveiling with more details and images, so keep an eye out for our dedicated Geneva show live site.

U.S. new car sales surge at fastest pace in nearly 7 years

U.S. sales of cars and light trucks surged 9 percent in November 1.24 million units and rolled off dealership lots at the fastest pace in almost seven years. The industry's annualized sales rate, adjusted for seasonal factors, rose to 16.4 million last month, up from 15.3 million a year earlier and easily topping analysts' forecasts in the 15.8 million range.