BMW is celebrating three decades of its supercar-baiting M5 uber-saloon with the unveiling of the most powerful version yet.
Called the '30 Jahre M5' (30 years of the M5), the new model will be strictly limited to 300 units and features a mild power hike of 25bhp, taking the total output to a dizzying 592bhp.
The mechanicals of the M5's 4.4-litre twin-turbocharged V8 engine remain unchanged from the M5 Competition Pack model on which the special edition is based. The power gains have been made with software revisions to the engine management system and an increase in turbo boost pressure, reports Autocar magazine.
As with the standard version, power is sent to the rear wheels via a seven-speed twin-clutch automatic gearbox. Capable of 0-62mph in just 3.9 seconds and with the option of an electronically limited top speed of 199mph, the 30 Jahre M5 is the fastest series production BMW ever made.
The chassis is unchanged from the Competition Pack version, meaning firmer springs and dampers and a 10mm drop in ride height over the standard M5, as well as a re-programmed stability control programme and faster reactions from the electro-mechanical steering system.