While BMW's next 5 Series won't appear until early next decade, technical details are leaking out. Codenamed F10, the 2011 5 Series will feature engines based on the new turbo range. There's a 3.0-liter twin-turbo inline-six in the 540i, a 4.4-liter twin-turbo V-8 in the 550i, and a twin-turbo clean diesel.
Even the M5 will switch from the ultra-high-revving V-10 to a turbo V-8, we hear. Hybrids will likely be available as both full dual-mode and mild types, depending on how they're received in the upcoming X6 and 7 Series hybrids.
The 5's wheelbase will grow a couple of inches, but the aim is to maintain current mass through the use of smaller, turbocharged engines and extensive aluminum in the body's exterior panels, such as closing panels, fenders, and roof.
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