Got my 540i yesterday, if only talking about acceleration it blows the doors of my 400E, not to mention a 420sel, actually the 540 6-speed has the same acceleration as 500E, but it handles better, after all its technology is a decade newer...

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99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.