2021 BMW M340 review
BMW M340 highlights
Customer rating
(not yet rated)
RepairPal reliability rating
(data not available)
Pros
- Polished handling and performance
- Tastefully modern interior with plenty of room
- Powerful engine
Cons
- Infotainment system can be complicated to use
- Most of the 3 Series' advanced driver assist features aren't standard
Mileage (EPA estimate)
22 city, 30 highway, 25 combined
Pricing for current inventory
(no current inventory)
The 2021 BMW M340i is a compelling mix of strong performance and daily practicality
Powered by a turbocharged six-cylinder engine and underpinned by a sport-tuned suspension, the 2021 BMW M340i doesn’t lack for performance. Available all-wheel drive adds foul-weather capability to the mix, making it an excellent choice for driving enthusiasts who want a little extra thrill in their daily drive but can’t give up daily practicality.
There’s a lot to like about the BMW 3 Series in general, and the M340i in particular. The drivetrain and suspension combine for excellent driving dynamics. The M Sport performance package dials up handling a notch, at the expense of ride quality. Inside, the M340i features premium trim like leather seating surfaces and plenty of modern high-tech features like smartphone integration and advanced driver assist on the options menu.
As good as the M340i is though, competitors haven’t stood still. Aside from the traditional BMW grille, the styling borders on generic, especially from the rear. Additionally, many features that are standard on competitors are on the options sheet, making finding a fully equipped model challenging.
All BMW M340 years
What is new for the 2021 BMW M340?
- M340 trims have been upgraded with Lane Departure Warning and Android Auto as standard equipment this year.
- Rear Seat Heaters and Power Hatch/Deck Lid features are now available as options on select trims.
2021 BMW M340 trims
I:
- 382-hp, 369-lb-ft of torque 3.0L
- Rear View Camera
- Lane Departure Warning
- Sunroofs
- Rear Defroster
- Cruise Control
- Power Seats
- Memory Seats
- Power Mirrors
- View our BMW M340 I inventory
I xDrive:
- Includes all features available on the I
- 4WD/AWD
- View our BMW M340 I xDrive inventory
5 reasons to buy the 2021 BMW M340
What We Like
Performance: There’s no question that the 2021 M340i upholds the BMW tradition of driving performance. The powerful turbocharged 6-cylinder is a joy to drive, and the powerful brakes are an unsung hero in the dynamics department. While the M Sport package may firm up the suspension too much for some tastes, there’s no denying it enhances the performance experience.
Practicality: As fun as the M340i is to drive, it’s also a completely practical four-door sedan in the day-to-day grind. The comfortable interior has plenty of space for four, and the trunk also has plenty of space. The rear seatbacks even fold down in a 40/20/40 split to accommodate larger objects.
Interior Design: BMW designs its interiors around the driver, which means everything is within easy reach, and for the most part easy to use. There are definitely worse places to spend time behind the wheel.
What Needs Improvement
Too many features are optional: New-car shoppers can enjoy the experience of customizing their BMW through the extensive options list, but with so many features on the options list, it can be difficult for used-car shoppers to navigate. This is especially true for advanced driver assist systems, which are all optional on the M340i, and divided between two groups: Driving Assistance and Driving Assistance Professional packages. We consider these systems very useful for buyers, so keep an eye out for those packages.
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Ratings & reliability
Customer ratings
The 2021 BMW M340 is not yet rated. Help future customers learn about a car you've owned and write a review.
BMW M340 features and specs
I 2WD 4D Sedan
Standard Features
- ABS Brakes
- Air Conditioning
- Alloy Wheels
- AM/FM Stereo
- Android Auto
- Apple CarPlay
- Automated Parking
- Automatic Transmission
- Auxiliary Audio Input
- Bluetooth Technology
- Cruise Control
- Lane Departure Warning
- Leatherette Seats
- Memory Seat(s)
- Navigation System
- Overhead Airbags
- Power Locks
- Power Mirrors
- Power Seat(s)
- Power Windows
- Rear Air Conditioning
- Rear Defroster
- Rear Spoiler
- Rear View Camera
- Run Flat Tires
- Satellite Radio Ready
- Side Airbags
- Smart Key
- Sunroof(s)
- Traction Control
- Turbo Charged Engine
- Automated Cruise Control
- Blind Spot Monitor
- Front Seat Heaters
- Harman Kardon Sound
- Head Up Display
- Heated Steering Wheel
- Lane Departure Warning
- Leather Seats
- Parking Sensors
- Power Hatch/Deck Lid
- Rear Seat Heaters
- Rear Spoiler
- Rear View Camera
- Remote Start
Drive Wheels
Rear Wheel Drive (2WD)
Engine size
3.0L
Horsepower
382
Torque (ft-lbs)
369
Engine type
Turbo Gas
Fuel capacity
15.6
Wheelbase
112.2"
Overall length
185.7"
Width
71.9"
Height
56.4"
Leg room
F 42"/R 35.2"
Head room
F 38.7"/R 37.6"
Front tires
P225/45YR18
Rear tires
P255/40YR18
Seating capacity
5
Transmission
Automatic
2021 BMW M340 FAQ
The 2021 BMW M340 is available in multiple trims, each with its own estimated fuel economy, here are the EPA estimates for each trim:
- I : 23 MPG City and 32 MPG Highway
- I xDrive : 22 MPG City and 30 MPG Highway
Here is what's new for the 2021 BMW M340:
- Rear Air Conditioning
- Lane Departure Warning
- Automated Parking
- Android Auto
- Rear Seat Heaters
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We hope you found this information helpful. This content is intended to inform and is not meant to indicate that a particular vehicle is currently available or recommended for you.
Statements of fuel economy or EV range are based on EPA and other third-party estimates for vehicles when new. Fuel economy and EV range will degrade with time and vary based on age, driving conditions, vehicle history, and other conditions. See fueleconomy.gov for more info.
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