BMW i8 vs BMW 4 Series Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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2023 BMW i8 1.5 Coupe
Photo of 2014 model year shown

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2025 BMW 4 Series 2.0 420i M Sport (Pro Pack) Convertible 2d
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Specs

2023 BMW i8
1.5 Coupe
2025 BMW 4 Series
2.0 420i M Sport (Pro Pack) Convertible 2d
Powertrain 6-speed Automatic 8-speed Automatic
Drivetrain
4X4
RWD
Fuel economy, city -- --
Fuel economy, motorway -- --
Fuel tank volume 159 L 223 L
Engine
Fuel type
Hybrid
Petrol
Power
172 kW
135 kW
Torque
434 N-m @ 3,700 RPM
366 N-m @ 4,600 RPM
Cylinders
3 cylinders
4 cylinders
Engine size
1,499 cc
1,998 cc
Interior
Maximum seating 4 seats 4 seats
Front legroom -- --
Rear legroom -- --
Exterior
Length 119.1 m 121.11 m
Width 56.34 m 52.86 m
Height 32.79 m 35.15 m
Wheelbase 71.12 m 72.42 m

Available Options

2023 BMW i8
1.5 Coupe
2025 BMW 4 Series
2.0 420i M Sport (Pro Pack) Convertible 2d

Related Comparisons

2023 BMW i8
1.5 Coupe
2025 BMW 4 Series
2.0 420i M Sport (Pro Pack) Convertible 2d