M4 Convertible

Overview

Body

Subcompact CarsEPA, from EPA, last updated 6/11/2026

Drivetrain

Rear-Wheel DriveEPA, from EPA, last updated 6/11/2026

Transmission

Manual 6-spdEPA, from EPA, last updated 6/11/2026

Powertrain

GasEPA, from EPA, last updated 6/11/2026

Fuel

PremiumEPA, from EPA, last updated 6/11/2026

Engine & performance

HP

425

Power to weight

0.120 hp/lb

Axle ratio

3.46

Cyl

6EPA, from EPA, last updated 6/11/2026

Aspiration

TurbochargedEPA, from EPA, last updated 6/11/2026

Start-stop system

YesEPA, from EPA, last updated 6/11/2026

Efficiency

MPG Hwy

26 mpgEPA, from EPA, last updated 6/11/2026

MPG City

17 mpgEPA, from EPA, last updated 6/11/2026

MPG Comb

20 mpgEPA, from EPA, last updated 6/11/2026

Fuel $/yr

$3,850EPA, from EPA, last updated 6/11/2026

CO₂

440 g/miEPA, from EPA, last updated 6/11/2026

Eco Score

4/10EPA, from EPA, last updated 6/11/2026

Smog score

5/10

Elec. Range

0 miEPA, from EPA, last updated 6/11/2026

SmartWay certified

No

Dimensions & capacity

Length

184 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Width

74 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Height

54 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Wheelbase

111 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Curb Weight

3,530 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Safety NHTSA, model year

Recalls

3

Owner complaints

21

Reported injuries

2

Feature availability

Which features come standard, cost extra, or are locked to a pricier trim arrives with the next data phase. Standard equipment shows here today.