M440i Convertible RWD
What the M440i Convertible adds over the 430i Convertible
| Spec | 430i Convertible | M440i Convertible |
|---|---|---|
| Cylinder count | 4 | 6 |
| Engine displacement | 1998 cc | 2998 cc |
| Horsepower | 255 hp | 386 hp |
| Torque | 295 lb-ft | 398 lb-ft |
| Engine type (full description) | 2.0-liter BMW TwinPower Turbo inline 4-cylinder | 3.0-liter BMW M TwinPower Turbo inline 6-cylinder |
| MPG (city) | 27 mpg | 24 mpg |
| MPG (combined) | 30 mpg | 28 mpg |
| MPG (highway) | 35 mpg | 33 mpg |
Standard here, not on the base trim: 0-60 mph: 5 s (M440i Convertible), 3.0-liter BMW M TwinPower Turbo inline 6-cylinder, 386 hp, 398 lb-ft torque, Displacement: 2998 cc, Fuel economy city: 24 MPG (M440i Convertible), Fuel economy combined: 28 MPG (M440i Convertible), Fuel economy highway: 33 MPG (M440i Convertible), Shoulder room front / rear: 57.7 in / 54.1 in (Coupe), xDrive all-wheel drive
Specifications
Source: manufacturer press kitDimensions Exterior
| Wheelbase | 112.2 in |
Engine Basics
| Cylinder count | 6 |
| Engine displacement | 2998 cc |
| Engine type (full description) | 3.0-liter BMW M TwinPower Turbo inline 6-cylinder |
Engine Output
| Horsepower | 386 hp |
| Torque | 398 lb-ft |
Fuel Economy
| MPG (city) | 24 mpg |
| MPG (combined) | 28 mpg |
| MPG (highway) | 33 mpg |
Headroom
| Front headroom | 40.6 in |
| Third-row headroom | 36.1 in |
Shoulder Room
| Front shoulder room | 57.7 in |
| Third-row shoulder room | 46.2 in |
Transmission
| Transmission speeds | 8 |
| Transmission type | automatic |
Standard & optional equipment
Source: manufacturer press kitInfotainment1 std · 0 opt
- steering wheel-mounted paddle shifters
Interior3 std · 0 opt
- Headroom front / rear: 40.6 in / 36.1 in (Convertible)
- Shoulder room front / rear: 57.7 in / 46.2 in (Convertible)
- Shoulder room front / rear: 57.7 in / 54.1 in (Coupe)
Exterior1 std · 0 opt
- Body style: Convertible
Powertrain13 std · 0 opt
- xDrive all-wheel drive
- 0-60 mph: 5 s (M440i Convertible)
- 3.0-liter BMW M TwinPower Turbo inline 6-cylinder
- 386 hp
- 398 lb-ft torque
- 8-speed Sport Automatic transmission with Sport and Manual shift modes, steering wheel-mounted paddle shifters and Launch Control
- Displacement: 2998 cc
- Fuel economy city: 24 MPG (M440i Convertible)
- Fuel economy combined: 28 MPG (M440i Convertible)
- Fuel economy highway: 33 MPG (M440i Convertible)
- Gasoline fuel type
- Rear-wheel drive
- Top speed: 130 mph
Chassis1 std · 0 opt
- Wheelbase: 112.2 in (Convertible / Coupe)
Ranked by what shoppers ask about first; standard equipment before options.
Transcribed from the manufacturer's official press kit for the 2026 4 Series. Confirm with the window sticker for a specific unit.
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Common questions about the M440i Convertible
Source: EPA, NHTSA and manufacturer press kitsWhat does the 2026 BMW 4 Series M440i Convertible add over the 430i Convertible?
Against the 430i Convertible, 10 features become standard that the 430i Convertible does not and 8 published specifications differ. Both lists are on this page, taken from the manufacturer's own press material.