2020 Bmw M340I
Problems, Recalls & Reliability Report
Quick Summary
The 2020 Bmw M340I has 60 owner complaints filed with NHTSA — that's 4.6x the segment average of 13. The most common issue is engine problems (60% of all complaints), specifically: the engine oil pump has failed. the part is available for inspection. the failed oil pump causes the engine to blow up, leaving oil and coolant behind on the road as hazards and causing our vehicle violently spin out on the road. the problem has been reproduced multiple times and claimed by bmw deal. There are 10 recalls issued for this model year.
60
Total Complaints
10
Recalls Issued
—/5
Safety Stars
4.6x
vs Segment Avg
Known Problems(top 5 of 8)
ENGINE
36 complaints- • The engine oil pump has failed. The part is available for inspection. The failed oil pump causes the engine to blow up, leaving oil and coolant behind on the road as hazards and causing our vehicle violently spin out on the road. The problem has been reproduced multiple times and claimed by bmw deal
- • Oil pump in earlier models are known to fail prematurely due to plastic internals . There is a revised oil pump that has all metal internals but those have early model vehicles with same engine have received oil pumps that fail and can be catastrophic while driving and causing injury if vehicle fail
- • Electronic oil level sensor can’t read oil level. Vehicle is currently at the mechanic shop getting the oil pump replaced. It’s costing me around $2,500 out of pocket since I don’t have a active warranty anymore.
“The engine oil pump has failed. The part is available for inspection. The failed oil pump causes the engine to blow up, leaving oil and coolant behind on the road as hazards and causing our vehicle violently spin out on the road. The problem has been reproduced multiple times and claimed by bmw deal”
— NHTSA complaint filing
Recalls (10)
BMW of North America, LLC (BMW) is recalling one 2020 M340i and one M340i xDrive vehicle. Due to improper welding, the rear center headrest may fold in the event of a rear impact crash.
Risk: If the headrest folds down in a crash, there would be an increased risk of injury.
Fix: BMW will notify owners, and dealers will replace the rear center headrest, free of charge. The recall began August 28, 2019. Owners may contact BMW customer service at 1-800-525-7417.
Fuel Cost Calculator for 2020 Bmw M340I
Live EIA pricesBased on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.
5-Year Gas Price History
EIA weekly retail data · 2021 → todaySource: US Energy Information Administration weekly retail gasoline prices.
Estimated Insurance Cost for 2020 Bmw M340I
How this estimate is calculated
Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.
Maintenance & Warranty
Recommended Bmw M340I Service Intervals
Condition-Based Service (CBS) tells you exactly when service is due. Transmission fluid was labeled 'lifetime' but many owners service at 60K-100K.
"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.
Bmw New-Vehicle Warranty Coverage
Corrosion is unlimited miles for 12 years
These are the terms for a new Bmw. If you're buying a used 2020 M340I, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Bmw dealer for VIN-specific remaining warranty.
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 60 owner complaints for this specific year, here's what to check or ask about:
- ☐ENGINE: The engine oil pump has failed. The part is available for inspection. The failed oil pump causes the engine to blow up, leaving oil and coolant behind on the road as hazards and causing our vehicle violently spin out on the road. The problem has been reproduced multiple times and claimed by bmw deal
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: I WAS DRIVING ON THE HIGHWAY AT APPROXIMATELY 70 MPH, THE POSTED LIMIT, WHEN ALL OF A SUDDEN THE SUNROOF EXPLODED. IT SOUNDED LIKE A GUNSHOT AND I ALMOST LOST CONTROL OF THE VEHICLE. LUCKILY THE HEADLINER WAS CLOSED SO THE GLASS DID NOT ENTER THE CABIN. THERE WERE NO VEHICLES IN FRONT OF US FOR AT L
Typically appears around 50K miles. Repair cost ~$500
- ☐ELECTRICAL: Brought my car in for a starter recall picked it up next day and drove home then came out to turn my vehicle on again and it wouldn’t start. Burning smell from engine bay as well. Returned the car they inspected it and told me a faulty starter. When I brought the car in it was in perfect working con
Typically appears around 50K miles. Repair cost ~$500
- ☐FUEL SYSTEM: Oil pump appears to have failed. Told plastic components inside pump. BMW issued a new part number and changed pump to all metal internals. This is standard on later production dates now. Pump failure causes engine failure and oil gauge failure to read out. Head gasket replacement which may or m
Typically appears around 50K miles. Repair cost ~$500
- ☐RECALLS: Verify all 10 recalls have been completed — free at any Bmw dealer
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Bmw M340I — Year Comparison
How does 2020 compare to other years? Fewer complaints = more reliable.
Full years-to-avoid analysis →NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 60
- Recalls
- 10
- Fire reports
- 0
- Crash reports
- 0
- Injury reports
- 0
- Segment avg
- 13
Check a Specific VIN
See recalls for YOUR 2020 Bmw M340I