Built around a turbocharged 3.0-liter inline-six engine, the 2015 BMW Z4 sDrive35i RWD delivers 300 horsepower and 300 lb-ft of torque through a rear-wheel-drive layout. Power comes together with sharp handling, a retractable hardtop, and a cabin built for the driver, and because of this combination, the car stands as one of the more complete sports convertibles of its generation.
This roadster represents the mid-cycle version of the second-generation E89 Z4, and it carries forward BMW’s long-hood, short-deck sports car proportions in a form that still feels current. Between the four-cylinder sDrive28i and the more aggressive sDrive35is, the sDrive35i finds its place in the lineup, giving buyers a mix of everyday usability along with genuine performance.
Engine and Powertrain
A twin-turbocharged straight-six engine powers the sDrive35i, and this layout is something BMW has spent decades refining.
- Engine: 3.0-liter twin-turbo inline-six
- Output: 300 horsepower, 300 lb-ft of torque
- Transmission: Six-speed manual comes standard; seven-speed dual-clutch automatic is optional
- 0-60 mph: Close to 5.0 seconds when paired with the dual-clutch gearbox
- Top speed: Limited electronically to 155 mph
Quick, crisp shifts define the dual-clutch automatic, particularly once the driver moves into Sport or Sport+ mode. Throttle response sharpens in these modes, and steering weight adjusts too, so the car takes on a rather different character depending on which setting gets selected.
Rear-Wheel Drive Handling
Power in every version of the Z4, the sDrive35i included, reaches only the rear wheels. Much of why the car feels so connected to the road traces back to this layout.
- Cornering stability improves through balanced weight distribution
- Traction and stability control get disengaged in Sport+ mode, allowing more driver input
- Steering response stays direct across both low and high speeds
- Through fast, sweeping turns, the rear-wheel setup keeps the car planted
As a defining trait of the Z4 nameplate, this RWD configuration sets it apart from front-wheel-drive or all-wheel-drive rivals sitting in the same price range.
Design and Interior
BMW’s traditional sports car formula shows clearly in the Z4’s exterior, with a long hood, short rear deck, and a stance that sits low and wide. Between coupe and convertible modes, the two-piece retractable hardtop allows a switch within seconds.
Inside, modern technology meets detailing that leans on retro inspiration.
- Leather upholstery, with contrast stitching available as an option
- Trim with a metal-look finish, inspired by classic BMW interiors
- An iDrive controller for infotainment
- Switchgear styled like circular gauges, for a layout centered on the driver
- A premium audio system, offered as an option
Pricing and Trim Comparison
Three distinct power levels made up the 2015 Z4 lineup, letting buyers pick according to how much performance they wanted.
| Trim | Horsepower | 0-60 mph |
|---|---|---|
| sDrive28i | 240 hp | Roughly 5.4 to 5.8 seconds |
| sDrive35i | 300 hp | Roughly 5.0 to 5.2 seconds |
| sDrive35is | 335 hp | Roughly 4.5 to 5.0 seconds |
Between these trims, the sDrive35i sat right in the middle, offering a meaningful power jump over the base model while avoiding the added cost that comes with the top-tier 35is variant. For the 35i trim, pricing usually started higher than the base model, and options like navigation, premium interior packages, and driving assistance features pushed the total further still.
How well the Z4’s styling held up years after its original release has been noted by publications such as Car Magazine, which pointed out that the roadster kept turning heads long after launch.
Fuel Economy
Around 20 mpg combined is what the sDrive35i earned despite its power output, with 17 mpg coming from city driving and 24 mpg on the highway. Compared to the four-cylinder sDrive28i, which benefited from a smaller engine, this figure sits lower.
What Makes the sDrive35i Stand Out from Other Z4 Trims
A specific spot in the Z4 range belongs to the sDrive35i. Significantly more power than the 28i comes without the added stiffness and higher price tag that the 35is carries. For buyers wanting strong acceleration while still valuing a more comfortable daily ride, the 35i often turned out to be the better balance point.
Is the Dual-Clutch Automatic Worth Choosing Over the Manual?
For most drivers, the answer leans toward yes. A few tenths get shaved off the 0-60 time by the dual-clutch automatic compared to the manual, and shifts come faster and more consistently, especially once Sport+ mode gets engaged. Drivers who put outright speed and quick gear changes first tend to lean toward the automatic, while those who enjoy having full manual control still had the six-speed available as standard.
FAQs
What engine does the 2015 BMW Z4 sDrive35i use?
A 3.0-liter twin-turbocharged inline-six engine is used, producing 300 horsepower along with 300 lb-ft of torque.
Is the 2015 BMW Z4 sDrive35i rear-wheel drive?
Yes. Like the rest of the 2015 Z4 lineup, the sDrive35i sends power only to the rear wheels.
How fast is the 2015 BMW Z4 sDrive35i from 0 to 60 mph?
Around 5.0 seconds is the typical time when the car comes equipped with the seven-speed dual-clutch automatic transmission.
What is the difference between the sDrive35i and sDrive35is?
335 horsepower is produced by the sDrive35is, compared to 300 horsepower from the sDrive35i, and the former comes exclusively with the dual-clutch automatic transmission along with sharper handling tuning.
Final Thoughts
For drivers wanting strong six-cylinder power paired with rear-wheel-drive handling in a compact roadster body, the 2015 BMW Z4 sDrive35i RWD remains a well-rounded choice. Turbocharged performance, retractable hardtop practicality, and a cabin built around the driver come together in a blend that explains why this car still holds appeal among sports car enthusiasts today.
