G29 · Z4

What the BMW G29 Is

The BMW G29 designates the third-generation Z4, a front-engine, rear-wheel-drive two-seat roadster produced from 2019 through 2026. It marked a return to a traditional fabric soft-top after the retractable hardtop of the preceding E89 Z4, cutting weight and lowering the center of gravity. Developed alongside the Toyota GR Supra (the coupe counterpart built on the same platform), the G29 is assembled by Magna Steyr in Graz, Austria, and represents BMW's modern interpretation of the classic open sports car. You can confirm any car's exact build details with our VIN decoder.

Models and Body Style

The G29 is offered exclusively as a two-door convertible roadster. In the US market, BMW cataloged the following variants across the run:

• Z4 sDrive30i (also listed as sDrive 30i) — the turbocharged four-cylinder entry point
• Z4 M40i (also listed as sDrive M40i) — the inline-six flagship

"sDrive" signals rear-wheel drive; there is no xDrive Z4 in this generation. The naming reflects BMW's standard convention seen across the lineup and detailed in our BMW DNA reference.

Engines and Drivetrains

All G29 Z4s are turbocharged and rear-wheel drive, paired with an eight-speed ZF automatic transmission.

• sDrive30i: BMW's 2.0-liter B48 turbocharged four-cylinder, delivering brisk, efficient performance and lighter front-end weight.
• M40i: the 3.0-liter B58 turbocharged inline-six, providing strong midrange torque, a broad powerband, and genuine sports-car pace.

The B58 in particular has earned a reputation as one of BMW's most robust modern engines, and the M40i's adaptive M suspension, M Sport differential, and uprated brakes make it the enthusiast's pick.

Owning and Buying a G29

The G29 is a comparatively low-maintenance modern BMW, benefiting from proven B-series engines and the durable ZF automatic. Prioritize a documented service history, healthy soft-top operation, and up-to-date software. Shoppers cross-shopping older BMW roadsters and grand tourers may also consider the earlier E63 6 Series coupe or E64 convertible for a larger, six-figure-VIN alternative.

Strengths: lively chassis balance, strong turbo engines, refined open-top experience, and strong parts availability. Things to watch: as with any convertible, inspect top seals and drainage, verify electronics function, and budget for tires and brakes on hard-driven M40i examples. Overall, the G29 is one of the most accessible modern BMW performance cars to own.