BMW G29 Z4 Roadster
Co-developed with the Toyota GR Supra, the G29 Z4 combines BMW's modern tech with a traditional soft-top roadster experience. The potent M40i with its inline-6 is the enthusiast's choice, while early models offer an affordable entry point into the platform.
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The third-generation Z4, known as the G29, launched for the 2019 model year and was developed alongside the A90 Toyota GR Supra. The partnership resulted in a shared chassis and powertrains, though each car has unique tuning and bodywork. For the Z4, this generation marked a return to a fabric soft-top, a departure from the previous E89's folding hardtop, saving weight and lowering the center of gravity. The US market initially received the 255 hp sDrive30i with a 2.0-liter turbo 4-cylinder and the 382 hp M40i with a 3.0-liter turbo inline-6.
Enthusiasts gravitate toward the M40i for its excellent B58 inline-6 engine, which delivers smooth, potent performance and shares its core with the Supra. It's a true modern sports car with a classic front-engine, rear-drive roadster layout. As a relatively new model, it isn't a vintage collectible yet, but its performance credentials and link to the legendary Supra nameplate give it long-term appeal. The 2025 introduction of a manual transmission option for the M40i may also increase interest in the model line as a whole.
The G29 is still in its depreciation phase, with an average sale price around $36,000 reflecting the market's current supply of off-lease sDrive30i models. These cars represent a strong value for a modern German roadster. Well-optioned, low-mileage M40i examples command the highest prices, holding their value much better and pointing towards their future as a desirable driver's car.
Buying Tips
- The B58 inline-6 in the M40i is the enthusiast's choice for its power and character. The B48 4-cylinder in the sDrive30i is adequate but offers a very different experience.
- Operate the soft-top multiple times to check for smooth, quiet operation. Inspect the fabric for tears, premature wear, and proper sealing against the windows.
- Test all features of the iDrive infotainment system and digital instrument cluster. Electrical issues can be difficult and costly to sort out.
- Review the vehicle's service history. Consistent oil changes and maintenance records are critical for the health of these turbocharged engines.
- Check the large alloy wheels for curb rash, bends, or cracks, as low-profile tires make them susceptible to damage. Uneven tire wear can also indicate underlying alignment or suspension issues.
Prices for sold examples range from $24,000 for early base models to $62,000 for high-spec M40i variants.
506 BMW G29 Z4 Roadster vehicles have been tracked across auctions and listings on Hypercars, with 402 currently live.
Data sourced from Bring a Trailer, Cars & Bids, eBay Motors, PCarMarket, and Collecting Cars. Updated daily.
Frequently Asked Questions
How many BMW G29 Z4 Roadster listings are for sale right now?
There are 402 BMW G29 Z4 Roadster listings currently live across auctions, dealers, and marketplaces tracked by Hypercars.