Most common 2017 BMW 340i problems
Share of the 5 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
BMW 340i complaints by model year
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2017 BMW 340i:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
2017 BMW 340i engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl turbo | 8-speed automatic | RWD | 21 / 32 / 25 |
| 3.0L 6-cyl turbo | 6-speed manual | RWD | 19 / 29 / 23 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2017 BMW 340i a good car?
That is a low number of complaints for a car on sale this long. So far owners have filed 5 complaints with NHTSA.
What is the most common problem with the 2017 BMW 340i?
The windows, wipers & sunroof — 1 complaint, 20% of all complaints for this model year, most often about sun/moon roof assembly. Next are the electrical system (1) and engine & cooling (1).
How many recalls does the 2017 BMW 340i have?
NHTSA lists no recalls for the 2017 BMW 340i. You can still confirm with your VIN using our VIN recall check.
At what mileage do 2017 BMW 340i problems happen?
The median mileage reported in complaints is about 15,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.