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

Kia to unveil Cub concept at Seoul motor show

Kia will unveil its new Cub compact four-door coupé crossover concept at this week's Seoul motor show. Designed by Kia's Namyang Design Center in Hwaseong, South Korea, the concept measures in at less than four meters long and is the latest in a series of explorations into Kia's B- and C-segment future models, following last year's Trackster concept and the Provo concept shown at the Geneva show earlier this month. From the single released image, the Cub features another possible direction for Kia's now-familar tiger-nose DRG with a slim, horizontal air intake running underneath two-point LED headlamps.

Ariel Atom 3.5 (2012) first official pictures

It's difficult for Ariel to come up with a mid-life refresh for its cars - there simply aren't that many bits to fiddle with in the first place. Still, the boys from Somerset must have succeeded, because what we have here is the freshly updated Ariel Atom 3.5. As the name suggests, it's a development of the Ariel Atom 3, with a crop of minor visual  tweaks and some mechanical changes too, keeping Caterham and BAC looking over their shoulders.

Meet the 2015 Aston Martin V12 Vantage S

Aston Martin revealed the 2015 V12 Vantage S supercar on Tuesday. Besides the limited-run One-77 supercar, it's claimed to be the fastest road-going Aston ever built. The Vantage S is on sale now; first deliveries will start at the beginning of 2014.