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Nevertheless, the new M3 convertible offers better performance over the outgoing model E46. The first generation of M3 Convertible, which was launched in 1988, gave the first 200hp BMW 16 valves 2.3 liter four-cylinder engine. Generations subsequent M3 engines took the honours of a superior record six successive occasions in the engine of the Year awards.
Wind the clock forward 20 years for the introduction of the current generation of M3 convertible-E93. The new M3 convertible engine develops more than twice the power of the original delivery 420hp at 8300rpm and 400Nm of torque at 3900rpm its V8 3999cc power unit. Like the three previous generations, the engine of the new M3 convertible easily through the 100hp per litre barrier, offering 105hp per litre. The new car also offers an improvement of 10 per cent in the power-to-weight compared to its predecessor E46 M3 convertible.

The V8 engine powers the car from zero to 62 mph in 5.3 seconds and an electronically limited top speed of 155 mph. However, even with these levels of performance supercar, BMW EfficientDynamics program compensates somewhat the coup with the car delivering 21.9mpg on the combined cycle.

In standard specification, power is transferred to the road by BMW M manual six-speed variable speed and M differential. This vehicle up to 100 percent of the available power to the wheels with the most grip.

Gearbox using paddles on the steering wheel or the gear lever, the new gearbox uses two million DCT-cooled oil wet clutches, one controlling the gears 1, 3, 5 and 7 and the other Control gear 2, 4 and 6. With gear changes made in just a few milliseconds, and the next gear in preparation selected, the M-DCT car equipped with a manual transmission car outperforms the outright performance, economy and emissions. The sprint from zero to 62 mph is reduced by 0.2 seconds to 5.1 seconds while the combined 1.1mpg improves consumption and CO2 emissions, emissions fell by 16g/km to 293g/km.

Weight is always the problem with convertibles, especially great performances, like those of the M3. Accordingly, using a motor built alongside the BMW Sauber F1 BMW engines in the light alloy foundry in Landshut, Germany, the new V8 engine weighs a mere 202kgs; 15kgs less than six - cylinder it replaces. To better highlight the benefits of weight, the crankshaft in the new engine is made of a complete shape and weighs only 20 pounds.

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