1995-1999 Nissan Maxima Knock Sensor on 2040-parts.com

Aston Martin Vanquish Carbon Edition – costs £200,000

The Aston Martin Vanquish Carbon Edition in Carbon White It’s only a month since the 2015 Aston Martin Vanquish (and Vanquish Volante) were revealed with a series of updates that manage to turn the Vanquish in to a much more appealing car. That new appeal is mainly down to AML finally ditching their ancient six-speed auto ‘box and replacing it with a new 8-Speed ZF ‘box – which cleverly sits inside the old housing – increasing performance, drivability and economy in one fell swoop. The Vanquish now gets to 62mph in a very respectable 3.8 seconds and can top 200mph, despite which official economy improves to 31mpg (more like 16mpg in the real world).

Jaguar XF – the 2010 police version for Plod

This is the first police-spec Jaguar XF – bound to an orderly life of patrolling the motorways around the Midlands area encircling Jaguar's HQ. The local constabulary has bought seven 271bhp 3.0-litre Diesel S models in police trim.What's changed to make the XF a police car?Not much out of the ordinary. It's much easier to spot than a demarked police car, with its roof bar, LED flashers in the grille and refletive decals galore.It's ironic that Jags used to be the getaway vehicle of choice in the 50s, 60s and 70s in films of a certain bent; now Jaguar has gone good and supplying Plod himself.

General Motors to invest more than $850 million to build new V8s

General Motors Co. said Tuesday it will invest more than $850 million to upgrade five North American factories to make its next-generation V8 engines more fuel efficient. The new V8s will differ from the current versions by using direct injection and a new combustion system, spokeswoman Sharon Basel said.