Horton Fan Clutch 791058 on 2040-parts.com

Porsche Cayman and Boxster GTS on the way

Porsche Cayman GTS and Boxster GTS variants are expected to be unveiled at the 2014 Beijing Motor Show this year, before the upgraded versions of the German firm’s two-seater coupe and convertible models go on sale in April. According to reports, development work on both cars is now almost complete, with both vehicles gaining a power increase and revised styling over existing Cayman and Boxster models (pictured). On Bing: see pictures of the Porsche Boxster GTSFind out how much a used Boxster costs on Auto Trader Porsche has used the ‘GTS’ tag before, for versions of its existing cars that provide a more focused driver experience and greater emphasis on involvement and handling, and which retain normally aspirated engines.

Audi TT RS plus costs from £48,945

Audi TT RS Plus costs from £49k With the Audi TT RS Plus order book about to open in the UK, Audi reveals it will costs from £48,945 for the manual coupe. Audi revealed the TT RS Plus back in February – ahead of a debut at the Geneva Motor Show in March – as a new range-topping model to sit above the existing TT RS. The TT RS Plus gets pretty much the same performance and power levels as the US version of the TT RS, but Audi has positioned the RS Plus at the top of the range in the UK and Europe as a more hard-core version of the regular RS.

California looks to tighten pollution limits

The California Air Resources Board is scheduled to vote on Thursday on whether to adopt stricter clean-air standards for the state proposed by the Advanced Clean Car program. The program's proposal combines the control of soot, smog-causing pollutants and greenhouse-gas emissions into a package that may be required for model years 2017 through 2025. According to the program, the rules aim to clean up conventionally powered cars, deliver more zero-emissions cars and ensure that a fueling infrastructure is available.