The BMW 340i spans 2016–2024 with 1 recorded NHTSA recalls and a 4.5/5 ForCar reliability score. It delivers up to 25 mpg combined and NHTSA-rated safety.
How we score: NHTSA crash-test safety (40%), recall frequency across all years (25%) and the share of owner complaints involving a crash, fire or injury (35%). Based on NHTSA & EPA data — not user reviews.
Overview
The BMW 340i is one of the most popular vehicles in its class, produced from 2016 to 2024 across multiple generations.
How to read a BMW 340i VIN — every digit explained
Every BMW 340i carries a unique 17-character VIN stamped at the factory. Each position is a code — together they spell out where, when and how your car was built. Here's exactly what every digit means.
- WMI (1–3) — country & manufacturer. Tells you it's a BMW and the country it was built in (real BMW codes below).
- VDS (4–8) — model, body style, engine, trim & restraints. The 8th digit is the engine code.
- Check digit (9) — a math check that proves the VIN is genuine.
- Model year (10) — the year it was built (e.g. R = 2024, S = 2025).
- Plant (11) — which factory assembled this 340i.
- Serial (12–17) — the unique sequential production number.
- Germany3MF · 3MW · 5UM · WAP · WB1 · WB3
- USA4US · 5UX · 5YM
Digits 4–17 — the engine code (8th), model-year letter (10th) and plant — follow the universal SAE standard, identical on every car. For the full year-code table (2001–2026), country codes and where the VIN is stamped on your 340i, see the complete guide to reading a VIN.
How many recalls does the BMW 340i have?
The BMW 340i has 1 recorded NHTSA recalls across 2016–2024. Pick a year below to see its recalls — then verify open recalls against your specific VIN.
2018 BMW 340i recalls 1
Engine And Engine Cooling:engine
What's wrong. BMW of North America, LLC (BMW) is recalling certain 2018 BMW 540d xDrive vehicles. The crankshaft sensor may be equipped with incorrect firmware, preventing the sensor from properly processing input from the crankshaft reluctor ring, possibly resulting in a vehicle stall. On September 12, 2018, BMW expanded the recall to a total of 5,309 vehicles including certain 2018-2019 BMW 540d xDrive, 230i M240i, M240i xDrive, X2 sDrive28i, X2 xDrive28i, X1 sDrive28i, X1 xDrive28i, 330i, 330i xDrive, 340i, 340i xDrive, 330i xDrive Gran Turismo, 530i, 530i xDrive, 540i, 540i xDrive, 530e, 530e xDrive, 640i xDrive Gran Turismo, 330e, 2019 430i Gran Coupe, 430i xDrive Gran Coupe, 440i Gran Coupe, 440i xDrive Gran Coupe, 430i, 430i xDrive, 440i, 440i xDrive, 740i, 740i xDrive, MINI Cooper, Cooper S, JCW, MINI Countryman (Cooper, Cooper All4, Cooper S, Cooper S All4, JCW All4), and MINI Clubman (Cooper, Cooper S, Cooper All4, Cooper S All4, JCW All4) vehicles.
Risk. A vehicle stall can increase the risk of a crash.
Fix. BMW will notify owners, and dealers will replace the crankshaft sensor, free of charge. The recall began September 6, 2018. Owners may contact BMW customer service at 1-800-525-7417.
Best and worst years for the BMW 340i
We're still compiling NHTSA owner-complaint history for the BMW 340i — best- and worst-year trends will appear here once that data is in.
What are the most common BMW 340i problems?
We're still compiling NHTSA owner-complaint data for the BMW 340i — the most-reported problems will appear here once that data is in.
Source: NHTSA owner complaints, all model years. Bar = share of total complaints. Full reports searchable on NHTSA.gov.
BMW 340i specifications & dimensions
The 2021–2024 BMW 340i measures 185″ long on a 112″ wheelbase, with a curb weight near 3,825 lb. Full dimensions below — engine, horsepower and trim decode from your VIN. For the original factory build — MSRP, trim and standard equipment — rebuild the BMW 340i window sticker.
| Years | Length | Width | Height | Wheelbase | Curb weight |
|---|---|---|---|---|---|
| 2021–2024 | 185″ | 72″ | 57″ | 112″ | 3,825 lb |
| 2016–2018 | 182″ | 71″ | 56″ | 111″ | 3,545 lb |
Source: NHTSA vPIC / Transport Canada vehicle specifications. Metric values converted to imperial; generation ranges approximate.
BMW 340i cargo space, seating & interior room
How much the 340i holds — passengers and cargo. EPA measures its interior at 102 cu ft of passenger volume and 25 cu ft of cargo. Seating capacity and legroom vary by trim.
Exact seating capacity, third-row availability, legroom and headroom decode from your VIN or vary by trim — the original factory equipment & options list shows what each trim included.
Passenger & cargo volume from EPA fueleconomy.gov (largest configuration). Seats, legroom and headroom from NHTSA vPIC on VIN decode.
BMW 340i tire size, oil type & owner specs
The fitment owners look up most — tires, wheels, oil and batteries. Exact wheel and tire sizes decode from your VIN or the driver's door-jamb placard; the universal items are listed below.
Exact tire, wheel, oil grade, capacity and battery group are added per trim and model year — decode your VIN above for the factory fitment. Universal items shown as-is.
What MPG does the BMW 340i get?
The BMW 340i returns up to 25 combined MPG (EPA), which works out to roughly $3,100/yr in fuel. Pick an engine to see MPG, annual running cost and CO₂ by year:
The 2019 BMW 340i (3L 6-cyl) gets 23 mpg combined and costs about $3,350/yr to fuel, emitting 383 g/mi CO₂ (GHG 5/10, smog 3/10) — about $5,750 more than the average new vehicle over 5 years.
| Year | City | Hwy | Comb | Fuel/yr | CO₂ g/mi | Smog | Engine |
|---|---|---|---|---|---|---|---|
| 2019 340i | 20 | 29 | $3,350 | 383 | 3/10 | 3L 6-cyl | |
| 2018 340i | 21 | 32 | $3,100 | 352 | 3/10 | 3L 6-cyl | |
| 2017 340i | 21 | 32 | $3,100 | 358 | 6/10 | 3L 6-cyl | |
| 2016 340i | 22 | 32 | $3,100 | 349 | 6/10 | 3L 6-cyl |
Source: EPA fuel-economy database (ForCar-hosted, 1986–2027) — best combined rating per engine & year, with EPA annual fuel cost and tailpipe CO₂. Trim & drivetrain vary slightly; decode your VIN for the exact figure.
See how the 340i stacks up against the most fuel-efficient sedans, or calculate this 340i's real yearly fuel cost.
What engines does the BMW 340i have? Power & range
The BMW 340i is offered with 1 powertrain — 3L 6-cyl. Here's the lineup by engine, transmission and drivetrain.
| Engine | Displacement | Transmission | Drive | Fuel |
|---|---|---|---|---|
| V6 | 3.0L · 6-cyl | Automatic (S8) | AWD | Premium |
Horsepower, torque and fuel-tank size decode from your VIN — exact figures vary by engine and trim.
Source: EPA fueleconomy.gov (engines, drivetrain, range, charge time). Horsepower & torque from NHTSA vPIC on VIN decode.
How much does a BMW 340i cost to own?
A BMW 340i tends to depreciate faster than average. A typical example keeps roughly 37% of its value after five years — losing about 63% to depreciation. Fuel, maintenance and insurance add to the total cost to own.
| Age | Value retained | Est. resale value | Lost to depreciation |
|---|---|---|---|
| Year 1 | 75% | $22,500 | −$7,500 |
| Year 2 | 63% | $18,900 | −$11,100 |
| Year 3 | 53% | $15,900 | −$14,100 |
| Year 4 | 44% | $13,200 | −$16,800 |
| Year 5 | 37% | $11,100 | −$18,900 |
What goes into the five-year cost to own:
- Depreciation — the biggest cost: this 340i loses about 63% of its value over five years. See the full depreciation curve by age.
- Fuel — ≈ $15,500 over five years at roughly 15,000 miles a year.
- Maintenance & repairs — routine service, tires and wear items as the 340i ages.
- Insurance — varies by driver, state and trim; get a quote for your exact figure.
Resale & depreciation are ForCar estimates from typical segment value-retention curves — not a live market quote. Fuel from EPA fueleconomy.gov at ~15k mi/yr.
How much is a BMW 340i to insure?
A BMW 340i costs about $1,671 a year to insure for a typical driver on full coverage — roughly 16% above the average car. That's from its real HLDI insurance-loss index (116, where 100 = average car); your own rate moves with state, age, record and coverage.
Estimate = US-average premium × the 340i's HLDI loss index. See BMW insurance cost by model, cost by state, or compare any car.
Is the BMW 340i safe?
NHTSA crash-test ratings aren't published for the 340i yet — see the top-rated safest cars instead.
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How many miles does a BMW 340i last?
A well-maintained BMW 340i typically lasts 250,000–300,000+ miles. It's exceptionally durable — with routine maintenance many owners report 250k+ on the original powertrain. Its ForCar Reliability Score is 4.5/5.
Check your BMW 340i’s VIN — history, recalls & specs
Title records, open recalls, build details and paint code — straight from the VIN. Free.
Check this 340i’s VIN free →All BMW 340i model years
A year-by-year snapshot of the BMW 340i — recalls, best EPA fuel economy and NHTSA safety. Tap a year for full details.
| Year | Recalls | Best MPG | Safety |
|---|---|---|---|
| 2024 340i | 0 | — | |
| 2023 340i | 0 | — | |
| 2019 340i | 0 | — | |
| 2018 340i | 1 recall | — | |
| 2017 340i | 0 | — | |
| 2016 340i | 0 | — |
Recalls = NHTSA campaigns that year · MPG = best EPA combined · Safety = NHTSA overall stars (tested years).
Frequently asked questions
What are the worst years for the 340i?
We're still compiling NHTSA owner-complaint history for the BMW 340i.
How many recalls does the 340i have?
1 recorded NHTSA recalls across 2016–2024. Always check open recalls by your VIN. See all BMW recalls and reliability across every model.
What MPG does the 340i get?
Up to 25 combined MPG (EPA), depending on engine — from the base 4-cylinder to the hybrid.
How many miles does a 340i last?
A well-maintained 340i typically reaches 200,000–300,000 miles with regular maintenance.
Is the 340i reliable?
Our ForCar Reliability Score for the 340i is 4.5/5, based on NHTSA safety, recall history and complaint severity.
What's the BMW 340i warranty?
New BMW models carry a 4 years / 50,000 miles basic (bumper-to-bumper) warranty and a 4 years / 50,000 miles powertrain warranty. Coverage can vary by model year and market — confirm with a BMW dealer.
Where is the BMW 340i made?
The assembly plant is encoded in the VIN — the 11th character. Decode your 340i's VIN above to see exactly where it was built; BMW may build it at more than one plant depending on the year.
How much does a 340i weigh?
The 340i's curb weight is around 3,825 lb. Its GVWR — the maximum loaded weight — decodes from the VIN.
How much ground clearance does the 340i have?
Ground clearance varies by trim and drivetrain — AWD/4WD versions often sit higher. Decode your VIN or check the specific trim for the exact figure.