All Z4 models are quick and nimble, but the sDrive35is is the most engaging to drive.
By blending roadster-grade sportiness with luxury-level comfort, the Z4 carves out a rather more touring-oriented niche for itself. It's quick but civilized.
A trio of Z4 choices are on offer: sDrive28i, sDrive35i, and sDrive35is. The first uses a turbocharged, 2.0-liter inline-4 rated at 240 horsepower and 260 pound-feet of torque. The second version rates 300 hp and 300 lb-ft of torque from aÂ turbocharged 3.0-liter inline-6. The sportiest version is the third, extracting 335 hp and 332 lb-ft of torque.
As you would expect, performance on offer matches the engine selected. The base variant of the Z4 is quick and fun, achieving the sprint to 60 mph in as little as 5.6 seconds, per BMW, but it ultimately lacks the vigor of the six-cylinder Z4s. Moving up to the sDrive35i slices 0-60 mph times to 5.0 seconds, but also brings a big improvement in mid-range acceleration from any speed. The range-topping sDrive35is is even sportier with a 4.8-second 0-60 mph sprint and noticeably more responsive acceleration all around.