The sporty version of the Z4 35i was unveiled back in December and aside from the visual enhancements, it brings out some consistent power upgrades. The 3.0L twin-turbocharged direct-fuel-injected inline-6 engine produces 335hp at 5,900 rpm and 332lb-ft of torque at 1,500-4,500 rpm. An overboost function gives the Z4 35is an whopping 369lb-ft of torque.
The engine is matted to a 7-speed DCT (dual-clutch) transmission. The Z4 35is runs from 0 to 62 mph in only 4.8 seconds, eclipsing the Boxster S’s time by 0.5sec, and has the usual maximum speed limit set at 155 mph.
Here is an excerpt from the Autocar’s review:
This new sDrive35iS variant shows that BMW is not about to let its roads slip off the radar of enthusiasts seeking an alternative to the Merc SLK and Nissan 370Z.
The reworked engine is super-responsive, with the sort of free-revving nature that makes it feel more like a normally aspirated unit than a turbocharged one. It also produces a wonderful soundtrack.
Channelling the engine’s added reserves back to the rear wheels is BMW’s seven-speed double-clutch transmission. It’s a little hesitant around town, but on the open road the shifts are more decisive and faster – especially so if you’re in the Z4’s Sport+ mode for engine, throttle and gearbox mapping.
For added entertainment and a smoother transition when closing down hard into corners, the new gearbox also introduces a hearty blip of the throttle on downchanges.
Should I buy one?
Roof up or roof down, the Z4 sDrive35iS confirms BMW commitment to the enthusiast driver. It’s just a pity that at a steep £43,615, it is even more expensive the old Z4 M roadster.