2018 BMW i3 Trims Comparison

Base i3 models are equipped with an electric motor (170 hp, 184 lb-ft of torque) that drives the rear wheels. With the same battery as last year's model, there's enough energy for an estimated 114 miles of range. It comes well equipped with 19-inch alloy wheels, LED headlights and Level 3 DC fast-charging capability. Inside, the interior upholstery is cloth (Deka World) and it comes with keyless entry, rain-sensing headlights, adaptive cruise, heated front seats, Bluetooth, HD and satellite radio, and BMW's basic Business navigation system with a modest 6.5-inch display screen.

New this year is the i3s, which has more power and sharper handling than the i3. The electric motor in the i3s cranks out 184 hp and 199 lb-ft of torque, which shortens its sprint from zero to 60 mph to 6.8 seconds (0.4 second quicker than the base i3). Compared to the i3, the i3s' ride height sits 0.4 inch lower, and its fenders, track width (the distance between the center of the tires), 20-inch wheels and performance tires are wider. The wider, stickier tires come with a modest penalty — maximum range drops to 107 miles.

The only difference between the all-electric and the Range Extender versions is, quite simply, the range-extending, 0.6-liter two-cylinder gasoline generator, which is the same as last year's. Because the Range Extender is heavier, these models don't travel quite as far when operating on electricity alone, maxing out at an estimated 97 miles. A 2.3-gallon fuel tank enables a combined range of 180 miles for both Range Extender versions of i3 and i3s models.

All models can be equipped with the Technology + Driving Assistant package, which adds advanced navigation with a widescreen display and advanced real-time traffic, all-speed adaptive cruise control, and forward collision warning with emergency braking. Opting for this package allows Apple CarPlay to be added, too.

For the i3, BMW offers three main upholstery packages — Mega World, Giga World and Tera World — that add combinations of leather and wool or full-leather upholstery plus different wheels and interior trim. Stand-alone options include parking sensors, 20-inch wheels (for the regular i3), a premium Harman Kardon audio system and a sunroof.