Four-door sedan · 3.0L B58 turbocharged inline-six with 48-volt mild-hybrid system (382 hp / 369 lb-ft)
2021 BMW M340i xDrive Sedan
BMW's U.S. 2021 model information lists the M340i xDrive as a distinct G20 3 Series sedan configuration.
Photo: “2021 BMW 3-Series M340i xDrive.jpg” by Chanokchon / Wikimedia Commons, licensed under CC BY-SA 4.0. Cropped to 16:9.
Factory configuration
What this model is
- Trim
- M340i xDrive
- Body style
- Four-door sedan
- Engine
- 3.0L B58 turbocharged inline-six with 48-volt mild-hybrid system (382 hp / 369 lb-ft)
- Transmission
- 8-speed Steptronic automatic
BMW added a 48-volt mild-hybrid system to both M340i drivetrains for model year 2021. Confirm the VIN and electrical system before ordering starter/generator or charging-system components.
Compare related 2021 configurations
Compare up to twelve documented pairings, prioritizing the same engine, body, trim and gearbox as this car. This related selection is not a complete factory lineup.
Browse all documented 2021 configurations →
Compare 8 related configurations — current car marked
| Configuration | Engine | Transmission | Body |
|---|---|---|---|
| BMW 330i Sedan | 2.0L B46 turbocharged inline-four (255 hp / 295 lb-ft) | 8-speed Steptronic automatic | Four-door sedan |
| BMW 330i xDrive Sedan | 2.0L B46 turbocharged inline-four (255 hp / 295 lb-ft) | 8-speed Steptronic automatic | Four-door sedan |
| BMW M340i Sedan | 3.0L B58 turbocharged inline-six with 48-volt mild-hybrid system (382 hp / 369 lb-ft) | 8-speed Steptronic automatic | Four-door sedan |
| Current carBMW M340i xDrive Sedan | 3.0L B58 turbocharged inline-six with 48-volt mild-hybrid system (382 hp / 369 lb-ft) | 8-speed Steptronic automatic | Four-door sedan |
| BMW 330e Sedan | 2.0L turbocharged inline-four plus electric motor (288 hp / 310 lb-ft combined) | 8-speed Steptronic automatic | Four-door sedan |
| BMW 330e xDrive Sedan | 2.0L turbocharged inline-four plus electric motor (288 hp / 310 lb-ft combined) | 8-speed Steptronic automatic | Four-door sedan |
| BMW M3 Sedan Manual | 3.0L S58 twin-turbocharged inline-six (473 hp / 406 lb-ft) | 6-speed manual | Four-door sedan |
| BMW M3 Competition Sedan | 3.0L S58 twin-turbocharged inline-six (503 hp / 479 lb-ft) | 8-speed M Steptronic automatic | Four-door sedan |
Configuration-specific ownership
Maintenance for this exact configuration
These items are filtered to the engine, transmission, trim, and model-year applicability recorded for this configuration. Broad Amazon category searches are suppressed here; shopping links appear only beside catalog-backed part numbers.
Service desk
What this car needs & when
Use this as a service-planning checklist for 2021 BMW M340i xDrive Sedan. Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.
- Service topics
- 4
- Scheduled topics
- 0
- Applicability stated
- 4
- Exact references
- 1
Before ordering Identify your engine, options and build date. Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.
Brake fluidView intervals, applicability and sources
Brake fluid
Fitment must be confirmed
BMW publishes this as a Condition Based Service task: follow the vehicle's displayed date/mileage forecast rather than a fixed generic interval.
Source: BMW USA service-and-warranty library — select 2021 Maintenance booklet · Maintenance System — brake fluid · checked
Cabin microfilterView intervals, applicability and sources
Cabin microfilter
Fitment must be confirmed
BMW combines this task with the engine-oil service occurrence identified by the vehicle.
Source: BMW USA service-and-warranty library — select 2021 Maintenance booklet · Maintenance Intervals — "combine with Engine oil" tasks · checked
Engine air filterView intervals, applicability and sources
Engine air filter
Exact reference available
BMW combines this task with the engine-oil service occurrence identified by the vehicle.
Source: BMW USA service-and-warranty library — select 2021 Maintenance booklet · Maintenance Intervals — "combine with Engine oil" tasks · checked
3.0L B58 turbocharged inline-six with 48-volt mild-hybrid system (382 hp / 369 lb-ft) — K&N 33-3136
K&N 33-3136
Manufacturer-catalog replacement-part fitment only; it does not establish a BMW service interval. Confirm the VIN, production date, engine, and installed filter dimensions before ordering.
Source: K&N — current BMW 330i/M340i replacement air-filter catalog · 2021 BMW 330i/330e/M340i 2.0L/3.0L gasoline or plug-in hybrid — 33-3136 · checked
Verified ordering references
- Validated equivalentK&N 33-3136
Qty. 1 · Panel engine air filter · catalog-listed
Verify the current manufacturer application listing, VIN, production date, and installed dimensions before purchase.
Catalog: K&N — current BMW 330i/M340i replacement air-filter catalog · 2021 BMW 330i/330e/M340i 2.0L/3.0L gasoline or plug-in hybrid — 33-3136 · checked
Search this part on Amazon
3.0L B58 turbocharged inline-six with 48-volt mild-hybrid system (382 hp / 369 lb-ft) — K&N 33-3136
K&N 33-3136
Manufacturer-catalog replacement-part fitment only; it does not establish a BMW service interval. Confirm the VIN, production date, engine, and installed filter dimensions before ordering.
Source: K&N — current BMW 330i/M340i replacement air-filter catalog · 2021 BMW 330i/330e/M340i 2.0L/3.0L gasoline or plug-in hybrid — 33-3136 · checked
Verified ordering references
- Validated equivalentK&N 33-3136
Qty. 1 · Panel engine air filter · catalog-listed
Verify the current manufacturer application listing, VIN, production date, and installed dimensions before purchase.
Catalog: K&N — current BMW 330i/M340i replacement air-filter catalog · 2021 BMW 330i/330e/M340i 2.0L/3.0L gasoline or plug-in hybrid — 33-3136 · checked
Search this part on Amazon
Spark plugsView intervals, applicability and sources
Spark plugs
Fitment must be confirmed
BMW combines this task with the engine-oil service occurrence identified by the vehicle.
Source: BMW USA service-and-warranty library — select 2021 Maintenance booklet · Maintenance Intervals — "combine with Engine oil" tasks · checked
Search results may cover different scales, trims and model years. Check each listing; this search does not establish an exact replica of the documented vehicle.
Sources
Other 2021 configurations