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

Koenigsegg Agera One:1 is world’s first “megacar”

Even in a world recently introduced to the Ferrari LaFerrari  (sold out), McLaren P1 (sold out) and Porsche 918 Spyder (er… ) hypercars, boutique Swedish supercar maker Koenigsegg has just made an extraordinary announcement. At the 2014 Geneva Motor Show, it will reveal the Agera One:1 – which Koenigsegg has dubbed the world’s first "megacar". Thing is, having looked at the spec, we believe it.

New Mercedes S 63 AMG costs from £119,565

New Mercedes S 63 AMG (pictured) costs from £119,565 The arrival of the new Mercedes S-Class in May saw MB move their range topper on properly for the first time in almost a decade, but with UK prices staring from £62,650 for the S 350 BlueTEC it wasn’t going to be on most people’s shopping list. And if you can’t afford Mercedes’ entry-level S-Class there’s no hope of affording the new S63 AMG, which Mercedes has revealed will cost an eye-watering £120k when it arrives in the UK in November. To be entirely fair, the new S63 is an awesome car with immense performance (which would be even more impressive if Mercedes endowed it with 4WD, as they do in other markets) with its 5.5 litre bi-turbo V8 developing 577bhp and getting the S63 to 62mph in 4.4 seconds.

Fiat unveils new 900cc TwinAir two-cylinder engine

Fiats of old used to feature noisy two-cylinders with a fetish for overheating, yet the Italians are at it again, this week releasing details of their new TwinAir two-cylinder 900cc engines. You can see how it works in our video below. The new engines, the first in a series of two-cylinders by the Italians, are designed to trump all other downsizing efforts. Headline figures from the 83bhp twin are 23% more power than the regular 1.2 four-pot and the same as a 1.4 16v - yet with 30% less consumption.