Compare

BMW 3 Series vs Mercedes-Benz C-Class

2026 BMW 3 Series vs 2026 Mercedes-Benz C-Class — two compact cars compared on efficiency, size, safety and reliability.

BMW 3 Series

2026 BMW 3 Series

Compact CarsAWD/4WDHybrid/EV
VS2 – 1BMW 3 Series wins 2 of 3 categories
Mercedes-Benz C-Class

2026 Mercedes-Benz C-Class

Compact CarsAWD/4WDHybrid/EV

Swap in a different car →

The short version

The BMW 3 Series is more fuel-efficient: 31 vs 29 MPG combined in its best version.

That works out to about $200 a year less in fuel for the BMW 3 Series (EPA estimate, 15,000 miles).

Across all model years since 2005, the Mercedes-Benz C-Class has had fewer recall campaigns (0 vs 4).

The two cars

The 2026 BMW 3 Series is a compact car offered with 2 engines (2.0L 4-cyl turbo and 3.0L 6-cyl turbo), including a hybrid version and rear-wheel drive and all-wheel drive. It measures about 185 inches long and 72 inches wide on a 112-inch wheelbase, with a curb weight of roughly 3,494 lb (3-Series 330i Xdrive 4dr Sedan).

The 2026 Mercedes-Benz C-Class is a compact car offered with a 2.0L 4-cyl turbo engine, including a hybrid version and rear-wheel drive and all-wheel drive. It measures about 189 inches long and 72 inches wide on a 113-inch wheelbase, with a curb weight of roughly 4,057 lb (Amg C43 4matic 4dr Sedan).

Buying used? The 2024 3 Series and the 2024 C-Class have the fewest problems in our data.

Basics

Compact Cars
Class
Compact Cars
Hybrid
Fuel
Hybrid
2.0L 4-cyl turbo, 3.0L 6-cyl turbo
Engines
2.0L 4-cyl turbo
Rear-Wheel Drive, All-Wheel Drive
Drivetrain
Rear-Wheel Drive, All-Wheel Drive

Efficiency

31 MPG
Best combined MPG
29 MPG
28 city
City / highway MPG (best)
25 city
$2,650
Fuel cost per year (EPA)
$2,850

Performance & space

185.4 in
Length
187 in
72 in
Width
71.7 in
56.7 in
Height
56.7 in
3,494 lb
Curb weight (lightest)
3,693 lb

Safety & reliability

0
Recalls (2026)
0
4
Recalls, all years since 2005
0
0
Owner complaints (latest year)
0

Interest

47,774
Wikipedia views, 30 days
26,190

Buying used

2024
Best used year
2024
–
Year to avoid
–

Green = clearly better. Prices are not included. How we calculate this →

Which one should you choose?

Choose the BMW 3 Series if…

  • You want lower fuel bills (31 vs 29 MPG)

Choose the Mercedes-Benz C-Class if…

It doesn't clearly beat the BMW 3 Series on any measure we track.

Pros & cons of each

2026 BMW 3 Series

  • Hybrid version availableOffered as a hybrid as well as gas.
  • AWD / 4WD available
  • Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.

2026 Mercedes-Benz C-Class

  • Hybrid version availableOffered as a hybrid as well as gas.
  • AWD / 4WD available
  • Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.

Full 2026 BMW 3 Series specs →Full 2026 Mercedes-Benz C-Class specs →Compare fuel costs for your driving →Compare size & garage fit →