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Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.

BMW Concept M135i at 2012 Geneva motor show

This is the BMW Concept M135i, which will be revealed at the 2012 Geneva motor show, and it previews a future hot 300bhp-plus 1-series. So what is the BMW Concept M135i? It’s a glimpse at a future BMW M Performance automobile.

Porsche 911 buyers flock to rare 24-month leases

Porsche is pushing 24-month leases for its 911 and is running a six-month lease pull-ahead incentive on all of its sports cars to offset a shortage of low-mileage used cars. This year, 22 percent of all 911 lessees have taken 24-month contracts rather than 36-month deals, says Michael Bartsch, COO of Porsche Cars North America. That compares with 10 percent before the push.