The MG6 diesel is now more efficient than before. But is it competitive?
New BMW M5
Just check the stats. The new E63 has up to 557hp against the M5's 560hp, 516lb ft versus 501lb ft and at 4.2 seconds is two tenths faster 0-62mph than the new BMW. Both have seven-speed gearboxes and both match each other to within fractions on CO2 and mpg.
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