Skip to content
BMW M440IModel year report

2021 BMW M440I Problems

Complaints
6filed with NHTSA
Median mileage
—no mileage reported
Recalls
5campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
—no overall rating published
EPA fuel economy
26 mpgcombined, 3.0L 6-cyl · hybrid RWD · 23 city / 31 hwy

Sources: NHTSA records for the 2021 BMW M440I (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 6 consumer complaints for the 2021 BMW M440I. The part named most often is engine, with 2 complaints (33% of the total), followed by brakes (1) and electrical system (1). Of all complaints, 1 involved a crash, 1 a fire, 2 an injury, according to the filers. NHTSA lists 5 recall campaigns and 124 technical service bulletins for this model year. Engine complaints overlap with 4 technical service bulletins filed under the same part. Brakes complaints overlap with 6 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Engine: “The car basically blew up on the highway at rush hour. BMW knows of this issue with this model and has some of their other models under a recall for this very thing. I have a service action from BMW saying that the water pump assembly needs to be fixed before this very problem occurs but for some reason even though our model is on the service report it isn't on the recall list nor was this part replaced as instructed even though the vehicle has always been service at a BMW dealership. …”

NHTSA complaint #11667474, filed 2025-06

Electrical system: “The engine starter motor system failed, specifically involving an intermittent no-start condition related to a pinion starter line break / internal component defect. The vehicle and all original mechanical components are fully intact and available for professional inspection upon request. The engine starter motor system failed, specifically involving an intermittent no-start condition related to a pinion starter line break / internal component defect. The vehicle and all original mechanical components are fully intact and available for professional inspection upon request. …”

NHTSA complaint #11770073, filed 2026-10

Forward collision avoidance: “I am seeing a lot of concerns regarding the seatbelt extenders, the buckle end pretensioner, seat wiring harness and the yellow box connectors that are where the main power and air bag SRS connections sit under the drivers seat. The seat harnesses are catching in the sliding track mechanism during forward and backward adjustments, isn't that a manufacturer error as the harnesses are only kept in place by plastic routing clips, which may or may not be there. I am just wondering if this should be looked at on the 2021 440i convertibles? …”

NHTSA complaint #11753304, filed 2026-07

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

20212023202520263
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2021 BMW M440I version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
M440i Convertible RWD3.0L 6-cyl · hybrid8-speed automatic233126$3,150
M440i xDrive Coupe AWD3.0L 6-cyl · hybrid8-speed automatic223125$3,300

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2021 BMW M440I → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 124 on record; the latest 10 are shown.

See all 124 bulletins →

Other model years of the BMW M440I

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20216—5—26—Not enough data

All BMW M440I model years

Frequently asked questions

How many NHTSA complaints does the 2021 BMW M440I have?

NHTSA recorded 6 consumer complaints for the 2021 BMW M440I as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2021 BMW M440I is reported most often?

Engine is named most often, in 2 complaints (33% of the total), followed by brakes with 1.

Has the 2021 BMW M440I been recalled?

NHTSA lists 5 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2021 BMW M440I get?

The EPA rates the 2021 BMW M440I (M440i Convertible, 3.0L 6-cyl · hybrid) at 26 mpg combined, 23 city and 31 highway, with an estimated annual fuel cost of $3,150 at 15,000 miles a year. Other engine and drive versions are rated differently.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.