As with all previous M5s since the introduction of the first generation model back in 1984, the most important highlight of the car is tucked away behind the double kidney grilles. This time, BMW’s M division opted for a 4.4-liter twin-turbocharged V8 engine that replaces the previous M5’s more exotic but less powerful, naturally aspirated 5.0-liter V10 with 507HP.
Aside from the somewhat disappointing sales, Nissan’s decision may also have to do with the fact that the Altima Hybrid utilizes a hybrid system sourced from rival Toyota. Nissan has since developed its own hybrid system with a new lithium-ion battery that made its debut on the 2012 Infiniti M Hybrid.
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It adopts Toyota’s new design language, with more angular headlights and more prominent creases in the body, although the general shape does not stray too much from the previous generation model.
As anticipated, the new model breaks with tradition by using a twin-turbocharged V8 (the outgoing M5 had a V10 and the one before that a V8, with the previous versions making do with in-line straight sixes, all naturally aspirated) sourced from the X5 M and X6 M.
Losing two cylinders and gaining two turbochargers seems like a fair trade, though, since the new M5’s output is up by 45 hp, from 507 to 552, and, more importantly, maximum torque has risen from 383 to 501 lb-ft (53,0 to 69,4 kgm).
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Nevertheless, we are offered out first look at the open-top version of the new Astra series, which is planned to go on sale by early 2013. The most important change over the previous Astra TwinTop is the replacement of the more complicated, heavier and costly retractable metal roof with a traditional fabric hood.
