Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2020 M340i.
Equipped with an Automatic (S8) transmission and EPA fuel economy estimates of 22/30/25 mpg, the 2020 BMW M340i occupies a distinct position within the 2019-2022 model complaint history. This model year recorded 49 total owner complaints, marking the highest volume in the range compared to the lowest count of 6 in 2022. With engine issues representing the top complaint area among the 10 recalls issued, this production year stands as the peak reliability concern for researchers examining the lineup's early data.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses OE oil filter 11428583896. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
| Engine oil filter | 11428583896 alt 11428583897 |
| Engine air filter | 13718635102 |
| Spark plug | 12122455258 |
| Battery | 61216806755 alt 61217555719 |
| Front wiper blades | 61619478361 |
| Thermostat | 11539494424 alt 11539494425 |
| Cabin air filter | 64119382886 alt 64119382885 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S8) |
| Overall length | 185.4 in |
| Overall width | 72 in |
| Overall height | 56.7 in |
| Wheelbase | 112.2 in |
| Curb weight | 3825 lb |
| Track (front / rear) | 62.2 / 63 in |
| Weight distribution (front / rear) | 52/48 |
| EPA city / highway / combined | 22 / 30 / 25 mpg |
| Drivetrain | Rear-Wheel Drive |
| Passenger volume | 94 cu ft |
| Cargo volume | 13 cu ft |
| Recommended fuel | Premium Gasoline |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the M340i of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.
| Year | Trim / engine | 0–60 | ¼ mile | HP | Drivetrain |
|---|---|---|---|---|---|
| 2020 | Sedan 3.0L Turbo I-6 | 3.80 sec | 12.30 sec | 382 hp | RWD |
| 2020 | Sedan 3.0L Turbo I-6 | 3.80 sec | 12.30 sec | 382 hp | RWD |
| 2020 | Sedan 3.0L Turbo I-6 | 4.20 sec | 12.70 sec | 382 hp | RWD |
| 2023 | xDrive Sedan 3.0L Turbo I-6 + Elec | 3.70 sec | 12.20 sec | 382 hp | AWD |
| 2023 | xDrive Sedan 3.0L Turbo I-6 + Elec | 3.80 sec | 12.30 sec | 382 hp | AWD |
| 2025 | Sedan (Shadowline Pack) 3.0L Turbo I-6 + Elec 0.4-kWh | 4.40 sec | 12.80 sec | 386 hp | RWD |
Capacities, torques and tune-up values from the factory service manual.
Torque lug nuts to 103 ft-lbs.
| Oil Pump to Cylinder BLock Bolts/Studs | 168.0 inch lbs. ft-lbs |
| Lug Nuts | 103 ft-lbs |
| Brake Caliper Bolt to Carrier Torque | 26.0 ft-lbs |
| Brake Caliper Carrier to Hub Bolt Torque | Use new bolts: 81.0 ft-lbs |
| ABS Sensor Torque | Front: 6.0; Rear: 6.0 |
| Vented Rotor Minimum Thickness for Replacement | Front: .882; Rear: .724 |
| 1 | M6 Bolts with 8.8 tensile strength | 84 in |
| 1 | 22.0 ft. lbs., Step 2: 90°, Step 3: 180° | 22 ft. lbs |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 2020 BMW M340i marks a notable spike in federal complaints (49) compared to its 2019 predecessor (0) and the subsequent 2021 (11) and 2022 (6) models, suggesting early-production teething issues rather than a persistent flaw. Recalls also peaked in 2020 (10), nearly double the 2019 total (5) and significantly higher than later years, while Technical Service Bulletins (TSBs) surged to 251—far exceeding other years in the generation. The majority of 2020 complaints center on the engine (25) and related systems, though the data does not specify root causes. By 2021–2022, complaints and recalls decline sharply, indicating BMW likely addressed these issues through revisions or service campaigns. With no crash or fire complaints reported for 2020, the concerns appear concentrated in drivability or component reliability rather than safety. **Takeaway:** While the 2020 M340i’s federal record reflects early-build challenges, its issues were evidently resolved in later years—making it a viable buy *only* if accompanied by thorough service records and confirmation of recall/TSB completions.**
All 49 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 10 campaigns on record for this vehicle.
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. Remedy: 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…
BMW of North America, LLC (BMW) is recalling certain 2019-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, X4 xDrive30i, X4 M40i, M550i, X4M, X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5M, X5 M50i, X7 xDrive40i, X7… Remedy: BMW will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021. Owners may contact BMW…
Showing 5 of 251 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B010325 | 2025-04-15 | Structure | The Radiator Grilles Lower Active Air Flap Assembly limited warranty for defects in… |
| B611305 | 2024-01-11 | Electrical System | The electrical system of BMW vehicles has been subject to an ongoing development process… |
| B340714 | 2023-10-13 | Service Brakes, Hydraulic | Functional noises (squealing/honking) when braking shortly before the vehicle comes to a… |
| B240323 | 2023-08-01 | Engine And Engine Cooling | ?A software error may cause an unwanted pressure pulsation in the transmission during a… |
| B410323 | 2023-07-01 | Suspension | The left front suspension's aluminum strut dome (general area circled) was incorrectly… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 10 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 22 city / 30 highway / 25 combined mpg.