2021
BMW M340

Starts at:
$54,700
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New 2021 BMW M340
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Available trims

See the differences side-by-side to compare trims.
  • M340i Sedan
    Starts at
    $54,700
    23 City / 32 Hwy
    MPG
    5
    Seat capacity
    Intercooled Turbo Gas/Electric I-6
    Engine
    Rear Wheel Drive
    Drivetrain
    See all specs
  • M340i Sedan North America
    Starts at
    $54,700
    23 City / 32 Hwy
    MPG
    5
    Seat capacity
    Intercooled Turbo Gas/Electric I-6
    Engine
    Rear Wheel Drive
    Drivetrain
    See all specs
  • M340i xDrive Sedan North America
    Starts at
    $56,700
    22 City / 31 Hwy
    MPG
    5
    Seat capacity
    Intercooled Turbo Gas/Electric I-6
    Engine
    All Wheel Drive
    Drivetrain
    See all specs
  • M340i xDrive Sedan
    Starts at
    $56,700
    22 City / 31 Hwy
    MPG
    5
    Seat capacity
    Intercooled Turbo Gas/Electric I-6
    Engine
    All Wheel Drive
    Drivetrain
    See all specs

Photo & video gallery

2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340 2021 BMW M340

Notable features

Android Auto now standard
Five-seat compact luxury sedan
Choice of turbo four-cylinder (330i) or six-cylinder (M340i)
Rear- or all-wheel drive
Hands-free low-speed highway driving system available
Plug-in hybrid 330e and high-performance M3 also available

The good & the bad

The good

Powertrain responsiveness
Ride quality
High-quality interior materials
Trunk room
Available 360-degree camera system has many view options

The bad

Lacks steering feel
Difficult to activate some safety features
Price gets high very quickly
Multimedia system’s learning curve
See all specifications

Expert 2021 BMW M340 review

our expert's take
Our expert's take
By Cars.com Editors
Full article
our expert's take

What Is the 2021 BMW 3 Series?

The BMW 3 Series is a five-seat luxury sports sedan that competes with the Audi A4, Mercedes-Benz C-Class and Lexus IS. The 330i is powered by a 255-horsepower, turbocharged 2.0-liter four-cylinder engine while the M340i gets a 382-hp, turbocharged 3.0-liter inline-six that works with a mild-hybrid system. Both engines work with an eight-speed automatic transmission, and rear- and all-wheel-drive models are offered. The plug-in hybrid 330e and high-performance M3 are covered separately in the Cars.com Research section. 

What’s New on the 2021 BMW 3 Series?

New standard features include Android Auto smartphone connectivity, keyless entry, automatic high-beam headlights and a one-year subscription to SiriusXM with 360L satellite radio.    

What Features in the 2021 BMW 3 Series Are Most Important?

  • Driving dynamics and performance, particularly M models
  • All-wheel drive available for both 330i and M340i
  • Apple CarPlay and Android Auto standard
  • Navigation standard
  • Automatic city collision mitigation standard
  • Hands-free low-speed highway driving system available

2021 BMW M340 review: Our expert's take

What Is the 2021 BMW 3 Series?

The BMW 3 Series is a five-seat luxury sports sedan that competes with the Audi A4, Mercedes-Benz C-Class and Lexus IS. The 330i is powered by a 255-horsepower, turbocharged 2.0-liter four-cylinder engine while the M340i gets a 382-hp, turbocharged 3.0-liter inline-six that works with a mild-hybrid system. Both engines work with an eight-speed automatic transmission, and rear- and all-wheel-drive models are offered. The plug-in hybrid 330e and high-performance M3 are covered separately in the Cars.com Research section. 

What’s New on the 2021 BMW 3 Series?

New standard features include Android Auto smartphone connectivity, keyless entry, automatic high-beam headlights and a one-year subscription to SiriusXM with 360L satellite radio.    

What Features in the 2021 BMW 3 Series Are Most Important?

  • Driving dynamics and performance, particularly M models
  • All-wheel drive available for both 330i and M340i
  • Apple CarPlay and Android Auto standard
  • Navigation standard
  • Automatic city collision mitigation standard
  • Hands-free low-speed highway driving system available

Factory warranties

New car program benefits

Basic
4 years / 50,000 miles
Corrosion
12 years
Powertrain
4 years / 50,000 miles
Battery
8 years / 80,000 miles
Maintenance
3 years / 36,000 miles
Roadside Assistance
4 years

Certified Pre-Owned program benefits

Age / mileage
Certified Pre-Owned Elite with less than 15,000 miles; Certified Pre-Owned with less than 60,000 miles
Basic
1 year / unlimited miles from expiration of 4-year / 50,000-mile new car warranty
Dealer certification
196-point inspection
See all CPO program details

Compare similar vehicles

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  • 2021
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    BMW M340
    Starts at
    $54,700
    23 City / 32 Hwy
    MPG
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    Seat capacity
    Intercooled Turbo Gas/Electric I-6
    Engine
    Rear-wheel drive
    Drivetrain
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  • 2023
    4.5
    BMW M340
    Starts at
    $56,400
    23 City / 31 Hwy
    MPG
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    Seat capacity
    Intercooled Turbo Gas/Electric I-6
    Engine
    Rear-wheel drive
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  • 2022
    Audi S5
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    Drivetrain
    Compare
  • Compare more options
    Use our comparison tool to add any vehicle of your choice and see a full list of specifications and features side-by-side.
    Try it now

Consumer reviews

100% of drivers recommend this car
5.0 / 5
Based on 1 review
Write a review
Comfort 5.0
Interior 5.0
Performance 5.0
Value 5.0
Exterior 5.0
Reliability 5.0
By Andragon from Long Island
Owns this car
March 31, 2021

Best combination of economy and performance

The word economy on M Performance car might look strange, but as a daily driver, its very important part. You can turn on eco-pro mode, and the car will transfer from extremely powerful and quick beast into a fuel sipping hybrid, that was doing 31 mpg on my highway tests. So far, I can tell that the technology in the car is amazing. Very thought of in many situations, that i am still discovering. I have it with executive package, that adds some nice things like heads up display, etc. I would say that its a must for those cars. At least a premium package is what you want here. Sound with HK system is very good. Clean, and powerful enough. Handling is amazing. Especially if you have M adaptive suspension pack. Good space for 4 and good trunk space as well. Voice communication is much more refined than previous generations. Wireless apple car play is a nice thing too. In a few words - love this car.
  • Purchased a New car
  • Used for Commuting
  • Does recommend this car
Comfort 5.0
Interior 5.0
Performance 5.0
Value 5.0
Exterior 5.0
Reliability 5.0
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BMW dealers near you

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FAQ

What trim levels are available for the 2021 BMW M340?

The 2021 BMW M340 is available in 2 trim levels:

  • M340i (2 styles)
  • M340i xDrive (2 styles)

What is the MPG of the 2021 BMW M340?

The 2021 BMW M340 offers up to 23 MPG in city driving and 32 MPG on the highway. These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on vehicle options, trim level, driving conditions, driving habits, vehicle maintenance, and other factors.

What are some similar vehicles and competitors of the 2021 BMW M340?

The 2021 BMW M340 compares to and/or competes against the following vehicles:

Is the 2021 BMW M340 reliable?

The 2021 BMW M340 has an average reliability rating of 5.0 out of 5 according to cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 BMW M340 owners.

Is the 2021 BMW M340 a good Sedan?

Below are the cars.com consumers ratings for the 2021 BMW M340. 100.0% of drivers recommend this vehicle.

5.0 / 5
Based on 1 reviews
  • Comfort: 5.0
  • Interior: 5.0
  • Performance: 5.0
  • Value: 5.0
  • Exterior: 5.0
  • Reliability: 5.0

BMW M340 history

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