BMW›M340i›2023›Overview/bmw/m340i/2023/base/

2023 BMW M340i

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2023 M340i.

Transmission Automatic (S8)

The 2023 BMW M340i pairs its Automatic (S8) transmission with an EPA-rated fuel economy of 23 city, 31 highway, and 26 combined mpg. Examining the model's complaint history from 2019 through 2022 reveals a sharp decline in reported issues, falling from a peak of 49 in 2020 to a record low of just 6 in 2022. Consequently, the 2023 model year enters the market on the heels of this improved reliability trajectory, indicating to researchers a matured platform where early-production faults have largely been resolved.

Model year202520242023

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Lug nut torque103.0 ft-lbsOEM · verified
EPA fuel economy23/31/26 mpgEPA · verified

Fitment & sizes

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.

Tail / brake / turnLAMPOEM · verified
Tire size225/45R18/XL 95HOEM · verified
Wheel / rim7.5; Optional: Front: 7.5, Rear: 8; 8; Front: 8, Rear: 8.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter11428583896 alt 11428583897
Engine air filter13718635102
Spark plug12122455258
Battery61215B3F325 alt 61217604808
Front wiper blades61619478361
Thermostat11539494424 alt 11539494425
Cabin air filter64115A2AD31 alt 64119382886

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S8)

Dimensions & weight NHTSA vPIC

Overall length185.4 in
Overall width72 in
Overall height56.7 in
Wheelbase112.2 in
Curb weight3825 lb
Track (front / rear)62.2 / 63 in
Weight distribution (front / rear)52/48

Ratings & economy EPA / vPIC

EPA city / highway / combined23 / 31 / 26 mpg
DrivetrainRear-Wheel Drive
Passenger volume94 cu ft
Cargo volume13 cu ft
Recommended fuelPremium Gasoline

Performance & power Independent road tests

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.

3.7–3.8 sec0–60 mph (tested)quickest 3.70 sec — 2023 xDrive Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
2023xDrive Sedan 3.0L Turbo I-6 + Elec3.70 sec12.20 sec382 hpAWD
2023xDrive Sedan 3.0L Turbo I-6 + Elec3.80 sec12.30 sec382 hpAWD
2025Sedan (Shadowline Pack) 3.0L Turbo I-6 + Elec 0.4-kWh4.40 sec12.80 sec386 hpRWD
2020Sedan 3.0L Turbo I-63.80 sec12.30 sec382 hpRWD
2020Sedan 3.0L Turbo I-63.80 sec12.30 sec382 hpRWD
2020Sedan 3.0L Turbo I-64.20 sec12.70 sec382 hpRWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

Torque lug nuts to 103.0 ft-lbs.

Chassis torques

Lug Nuts103.0 ft-lbs

Factory maintenance schedule OEM · verified

This vehicle uses condition-based service — it signals maintenance needs through its onboard service indicator rather than fixed mileage intervals. Items on the factory schedule:

ReplaceSpark Plugs · Keyless Entry Remote Battery · Cabin Air Filter · Engine Air Filter Element · Drive Axle Assembly
InspectWindshield Washer System · Parking Brake System · Underbody · Brake Line · Tire Repair Kit Sealant · Disc Brake Caliper · Brake Rotor · Air Bag System
Road testUniversal Vehicle Operation
Inspect Fluid LevelEngine Coolant System
ResetTire Pressure Monitoring System
Drain, Refill & BleedBrake Hydraulic System

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

1
Open recalls
NHTSA campaigns
0
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
0
Owner complaints
0 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent
’19’20’21’22

No owner complaints on record with NHTSA for this vehicle.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

23V118000Electrical System:Body Control Module:SoftwareReported 23/02/2023

BMW of North America, LLC (BMW) is recalling certain 2023 330i, 330i xDrive, M340i, M340i xDrive, M3, 330e, 330e xDrive, 430i Convertible, 430i xDrive, M440i, 2022-2023 430i, 430i xDrive, M440i xDrive, i4 eDrive40, and… Remedy: Dealers will update the ECU software, free of charge. Owner notification letters were mailed April 10, 2023. Owners may contact BMW customer service at 1-800-525-7417.

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific M340i. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Engine oil filter 11428583896Engine air filter 13718635102Spark plug 12122455258Battery 61215B3F325

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBsOBD-II trouble codesMaintenance schedulesFluid capacities & specs

Frequently asked

Does the 2023 M340i have open recalls?

NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the M340i get?

EPA figures are 23 city / 31 highway / 26 combined mpg.