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

Revealed: tech secrets of new 2014 BMW M3 and M4 Coupe

BMW has spent the past four years developing the new M4 Coupe and newly-announced M3 saloon from scratch – all with the intention of making its road-racer range more focused, more able and more relevant to modern motorists. They are faster, sharper and more dynamic, promises the firm, but also greener, smarter and more flexible than ever. The result, believe the engines, is a duo that’s without rival on the market – no other four-seat coupe or five-seat saloon offers this much high performance sports car ability for the money.

Caterham Supersport R extends Caterham 7 range

Caterham has added the Supersport R to its range of ’7′ models with a 2.0 litre Duratec Ford engine delivering 180bhp. In the meantime, Caterham’s core road car business is the old Lotus 7 range of Caterhams, so it makes sense to keep that more appealing and relevant until new cars start to arrive, so we get the Caterham Supersport R as an addition to the range to slot in between the Supersport and the Superlight models. The Supersport R gets a Ford Duratec 2.0 litre engine which produces 180bhp, which doesn’t sound a huge amount, but when you consider the Supersport R weighs in at just 535kg it starts to look plenty.

One Lap of the Web: DeLorean engine swaps, 2013 Women's World Car of the Year and the best French cars

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- We've driven the new BMW 4-series and found it worthy of being the 3-series coupe's successor.