The 1976 X1/23 is fitted with a 14 kW electric motor driving the front wheels and equipped with regenerative braking.[3] Batteries are located at the rear. The X1/23 has a top speed of 45 mph (72.4 km/h) and a claimed range of about 50 miles (80.5 km). Despite its diminutive size, the car weighs 820 kg (1,810 lb), 166 kg (366 lb) of which was due to the battery.[4]