2017 BMW 340I Problems
- Complaints
- 5filed with NHTSA
- Median mileage
- 14,500miles, 1 complaints with mileage
- Recalls
- 0campaigns on record
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
- NHTSA crash rating
- 5 / 5stars overall, 3 rated versions
- EPA fuel economy
- 25 mpgcombined, 3.0L 6-cyl RWD · 21 city / 32 hwy
Sources: NHTSA records for the 2017 BMW 340I (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
NHTSA recorded 5 consumer complaints for the 2017 BMW 340I. The part named most often is other or unknown, with 3 complaints (60% of the total), followed by electrical system (1) and engine (1). 1 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 14,500 miles. NHTSA lists 0 recall campaigns and 299 technical service bulletins for this model year. Other or unknown complaints overlap with 4 technical service bulletins filed under the same part. Electrical system complaints overlap with 98 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.
- Other or unknown3 60%
- Electrical system1 20%
- Engine1 20%
Example complaints
Other or unknown: “Driving about 40mph on a straight road, no potholes,on sunny day, temp about 50. Sudden explosion and sunroof exploded outward. Pulled off road, nothing had struck the car. The sunroof glass was completely shattered. There were no injuries”
NHTSA complaint #11088576, filed 2018-04, 14,500 milesElectrical system: “2017 Bmw 340I. Consumer writes in regards to mileage discrepancy. The consumer stated the company offleaseonly was running a scam, where they advertise low mileage cars when in actually the mileage is considerably higher.”
NHTSA complaint #11442806, filed 2021-12Engine: “My BMW had a pinhole in the radiator caused by driving on the highway and being impacted by a small foreign object. Apparently a foreign object (rock?) impacted the radiator creating a tiny leak. BMW repaired the vehicle (new radiator) and installed a Rock Guard without discussing this new Guard with me. Rock Guard Part # 17-11-8-185-042. This $1,900 repair is a known defect in the design which is why BMW adds the Rock Guard when replacing radiators. After the repair, research indicates this is a common issue for this model car. …”
NHTSA complaint #11464864, filed 2022-05Mileage when problems were reported
100% of the 1 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 14,500 and 14,500 miles.
Complaints by year filed
Fewer than 15 complaints, too few for a reliable trend.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 2017 BMW 340I. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| 3 Series · sedan AWD | ★★★★★ | 4 / 5 | 5 | 5 | 5 · 9.5% risk |
| 3 Series · wagon AWD | ★★★★★ | 4 / 5 | 5 | 5 | 5 · 9.5% risk |
| 3 Series · sedan RWD | ★★★★★ | 4 / 5 | 5 | 5 | 5 · 9.5% risk |
Neighbouring years: 2016: same overall rating; 2018: same overall rating. A redesign between years can change both the car and the test.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 2017 BMW 340I version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| 340i RWD | 3.0L 6-cyl | 8-speed automatic | 21 | 32 | 25 | $3,300 |
| 340i RWD | 3.0L 6-cyl | 6-speed manual | 19 | 29 | 23 | $3,550 |
| 340i xDrive AWD | 3.0L 6-cyl | 8-speed automatic | 21 | 31 | 25 | $3,300 |
| 340i xDrive AWD | 3.0L 6-cyl | 6-speed manual | 19 | 29 | 23 | $3,550 |
| 340i xDrive Gran Turismo AWD | 3.0L 6-cyl | 8-speed automatic | 20 | 30 | 24 | $3,400 |
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
NHTSA lists no recall campaigns for the 2017 BMW 340I in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by 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. 299 on record; the latest 10 are shown.
- 10249437Jan 16, 2024Visibility (wipers, defrost, mirrors), Electrical system. The basic conditions for initializing the power windows are not met.
- 10249027Jan 11, 2024Electrical system. 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…
- 10245364Nov 16, 2023Engine cooling. Diesel fuel injectors: ltd wty extension to 10 years/120,000 miles
- 10245365Nov 13, 2023Engine cooling. Pressure control valve (pcv) extended ltd wty 15 years/150,000 miles
- 10238090May 1, 2023Electrical system. After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
- 10238081May 1, 2023Body and structure. Upon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
- 10235205Mar 1, 2023Electrical system, Equipment. The 3G network in the US has been shut down. This means that only the 4G network will be available. In the 4G network, voice calls will be transferred via the Voice over LTE (VoLTE) function. For…
- 10235202Mar 1, 2023Electrical system, Exterior lighting. Exterior rear lights do not work.
- 10230722Dec 1, 2022Transmission and drivetrain. After an automatic engine start (MSA start), the transmission intermittently goes into the Park "P" or Neutral "N" position without any customer influence.
- 10230717Dec 1, 2022Fuel system. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Fuel Injectors to 10 years/120,000 miles as determined by the vehicle's original…
Other model years of the BMW 340I
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2017 | 5 | 14,500 | 0 | 5 | 25 | — | Not enough data |
| 2016 | 6 | 4,000 | 0 | 5 | 25 | — | Not enough data |
Frequently asked questions
How many NHTSA complaints does the 2017 BMW 340I have?
NHTSA recorded 5 consumer complaints for the 2017 BMW 340I as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2017 BMW 340I is reported most often?
Other or unknown is named most often, in 3 complaints (60% of the total), followed by electrical system with 1.
Has the 2017 BMW 340I been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
How did the 2017 BMW 340I do in NHTSA crash tests?
NHTSA's 5-Star Safety Ratings give the 2017 BMW 340I 5 out of 5 stars overall, across 3 rated versions (body style and drive). Ratings from different model years are only comparable when the vehicle was not redesigned in between.
What gas mileage does the 2017 BMW 340I get?
The EPA rates the 2017 BMW 340I (340i, 3.0L 6-cyl) at 25 mpg combined, 21 city and 32 highway, with an estimated annual fuel cost of $3,300 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 2017 BMW 340I reported?
Among the 1 complaints that include a mileage, the median is 14,500 miles and the middle half falls between 14,500 and 14,500 miles; 100% were filed for vehicles with under 50,000 miles.
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. Crash ratings are from NHTSA’s New Car Assessment Program. 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.