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2023 BMW

M440i xDrive Convertible

Auto (S8), 6 cyl, 3.0 L, Turbo

BMW M440i: best and worst years
2023 BMW M440i xDrive Convertible (photo 1 of 2)

Closest available photo (2022 model year); you're viewing the 2023.

2022 photoAlexander MiglCC BY-SA 4.0via Wikimedia Commons

Overview

Transmission
Automatic (S8)EPA, from EPA, last updated 6/22/2026

Engine & performance

Power to weight
0.092 hp/lb
Axle ratio
2.81

Efficiency

Smog score
5/10
SmartWay certified
No

Dimensions & capacity

GVWR class
Class 1 (6,000 lb or less)NHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026

Safety NHTSA record NHTSA, model year

Recalls
1
Owner complaints
3 See on NHTSA

Feature availability

Driver assist

Convenience

  • Push-button start
    Standard

Reported problems NHTSA record NHTSA owner complaints, model year

  • BACK OVER PREVENTION33%
  • SEAT BELTS33%
  • UNKNOWN OR OTHER33%

Source: NHTSA owner complaints, 3 total.

BMW M440i: best and worst years

Known issues manufacturer service bulletins, model year

11 service bulletins filed with NHTSA for this model year

  • May 6, 2026ENGINEB010126

    The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.

  • Feb 16, 2024VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEMB640422

    An interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in thecenter of the instrument panel. The groaning noise always occurs when either a ventilation flap, air stratification flap or the recirculated airflap moves to a different position. Due to the complex design of the heating and air-conditioning unit, the kinematics causing it (top or bottom,left or right) may not be able to be precisely located. Depending on the vehicle model, the number o

  • Jan 11, 2024ELECTRICAL SYSTEMB611305

    The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on how to handle “discharged battery” complaints.

  • Jan 8, 2024STEERINGB360121

    At low outside temperatures (below 40 degrees F) and slow driving speeds (i.e. when parking, maneuvering)with a large steering angle, the front end can be slightly axially misaligned. This can be felt (jerking)/ heard via an acoustic acknowledgement (clunk) as seen at the 11 second mark of the video. See attached video V36 01 21.

  • Jan 5, 2024ELECTRICAL SYSTEMB610524

    The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3). FaultB7F8F9 – “HU-H: Reset” will be stored in the HU-H3.

  • Jan 2, 2024SEATSB521723

    Customer states one of the front seats is inoperative. The seat heater and power supply are inoperative. During the vehicle test, the seat module does not respond. The power supply fuse for the seat module isfound to have blown.

  • Oct 13, 2023SERVICE BRAKES, HYDRAULICB340714

    Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. CAUSE Material-

  • Sep 29, 2023POWER TRAIN:DRIVELINE:DRIVESHAFTMCAS4023

    BMW AG has requested the inspection of all dealer stock of the following part number(s) listed below to ensure the spacer is conformed to drawing.

  • and 3 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr
Maintenance
3 yr / 36k mi
EV battery
8 yr / 100k mi

Source: bmwusaservice.com as of 2026-06

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.