Kenwood Sirius I/f Box Kca-sr50 on 2040-parts.com

Listen: Upcoming Ford Focus ST to employ sound symposer

While BMW employs a digitally sanitized/perfected sound file to give M5 owners the proper sense of aggro urgency when motoring at pace, Porsche went a little more organic with its employment of a sound symposer to feed the 911's flat-six growl into the cabin of the extra-refined 991. Essentially, the sound symposer is an electrically controlled diaphragm in a tuned sound tube that brings the proper engine noises into the passenger compartment. It can be opened and closed by the car's onboard electronics to offer snarl when you want it and serenity when you don't.

New Mercedes B-Class (2012) exterior photo leaks

2012 Mercedes B-Class - it's the one on the left (click for bigger image) We did wonder if Mercedes were trying to keep exterior photos of the 2012 Mercedes B-Class under wraps until it launches at Frankfurt next month. Not much chance of that now the first official exterior photo has leaked out. In case you’re wondering, the 2012 B-Class is on the left, with the 2008 B-Class on the right.

Show Review: Salon Privé 2011

Salon Privé is billed as Britain's most elite car show and, with its lashings of pink champagne, lobster barbecue and attendees who look to have taken a wrong turn from the UK scripted-reality show, Made in Chelsea, it's certainly the glitziest. This year Salon Privé moved from its traditional home of The Hurlingham Club, just a (precious) stone's throw from the real-life set of the aforementioned show, to the grounds of Syon House in outer West London. Home to the Duke of Northumberland, Syon House's Italian Renaissance architecture and lush grounds provide a fitting background for such an event although those familiar with the locales of Villa d'Este on the shores of Lake Como, the Goodwood Festival of Speed in the heart of Lord March's idyllic West Sussex estate or the dramatic Californian coastline of Pebble Beach may be disappointed.