The original Z07 had been designed with production in mind. As a result, practical and regulatory considerations necessitated very few changes for the production model. Nevertheless, the windshield of the Z8 was extended upward, and a larger front airdam was fitted. Both changes were implemented to provide aerodynamic stability and a reasonably placid cockpit environment. The four spoke steering wheel of the concept car was replaced by a three spoke design. The hardtop was changed from a double-bubble form with a tapering faring to a single dome with a truncated convex backside. The concept's exotic driver's side helmet fairing was eliminated to allow easy operation of the power soft top.
Despite these changes, the Z8 remained extremely faithful to the concept car. The side-mounted turn indicators were integrated into the side vents in a fashion that rendered them invisible until activated. The vintage simplicity of the interior was preserved by hiding the modern equipment under retracting panels. Complex compound curves were preserved through the use of an expensive MIG-welded aluminum space frame. The Z8 even retained the concept's five spoke wheel design, albeit without the race-style center lug nut.
The $128,000 car had an all aluminum chassis and body and used a 4.9 L (4941 cc) 32 valve V8, that developed 400 hp (294 kW) and 500 Nm (363 lb·ft). This engine was built by the BMW Motorsport subsidiary and was shared with the E39 M5. The engine was located behind the front axle in order to provide the car with 50/50 weight distribution. The factory claimed a 0 to 100 km/h (0 to 62.5 mph) time of 4.7 seconds; Motor Trend magazine achieved 0 to 60 mph (97 km/h) in 4.2 seconds. Road and Track measured the car's lateral grip at .92. Car and Driver magazine also tested the car and found that it outperformed the contemporary benchmark Ferrari 360 Modena in three important performance categories: acceleration, handling, and braking. As with most BMW products, its top speed was electronically limited to 155mph (249km/h); the car's maximum top speed with an unlocked chip was 186 mph (300 km/h).