BMW Z4

Our records hold 94 US-certified versions of the BMW Z4, spread across the 3 generations our records cover and model years 2003–2026. Every figure on the pages beneath this one comes from EPA fuel-economy filings, EPA certification test records or Transport Canada vehicle specifications, and each specification page names the source for the figure it shows.

The car has moved a long way inside its own name. Comparing the lightest version we hold under the E85/E86 against the lightest under the G29, the BMW Z4 is now 9.9 inches longer and 276 lb · 125 kg heavier. That is the single most useful thing to know before reading a road test written for an earlier generation.

As it stands in the 2026 model year, the BMW Z4 measures 170.9 in · 4,341 mm long, weighs 3,296 lb · 1,495 kg to 3,463 lb · 1,571 kg and is rated at 255 to 382 hp across the 3 versions certified for that year. Figures for every year before it are on the pages below.

Engine families we can name from certification data: N54, N20, B58, B48, N52 and one other. The linkage covers 49 of the 94 versions — certification records name an engine family reliably only from the late 1990s onward, so the older the car, the more often the field is empty.

Every version of the BMW Z4 we hold is rear-wheel drive.

The archive holds 12 original US brochures for the BMW Z4, each with its text searchable and the PDF available to download.