DecodedCars2018 Mercedes-Benz C-Class
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2018 models.
- Class
- Compact Cars
- Body styles
- Amg C63/C63s 2dr Convertible, Amg C63/C63s 2dr Coupe, C 300 4matic 4dr Sedan, C 300 4matic 4dr Wagon
- Engines
- 2.0L 4-cyl turbo, 3.0L 6-cyl turbo, 4.0L 8-cyl turbo
- Drivetrain
- Rear-Wheel Drive, 4-Wheel Drive
- Fuel
- Plug-in Hybrid, Premium Gasoline
- MPG (best)
- 30 combined · 28 city / 33 hwy
- Length
- 184.6–187.4 in
- Curb weight
- 3,583–4,206 lb
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- Plug-in hybrid version availableOffered as a plug-in hybrid as well as gas.
- AWD / 4WD available
- No recalls so far
Watch out for
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 34 similar 2018 models — not a review. How we calculate this →
Overview
The 2018 Mercedes-Benz C-Class is a compact car offered with 3 engines (2.0L 4-cyl turbo, 3.0L 6-cyl turbo and 4.0L 8-cyl turbo), including a hybrid version and rear-wheel drive and 4-wheel drive.
It measures about 187 inches long and 71 inches wide on a 112-inch wheelbase, with a curb weight of roughly 4,206 lb (Amg C63/C63s 2dr Convertible).
EPA rates its most efficient version at 30 MPG combined (28 city / 33 highway), 11% better than the 2018 compact car average of 27 MPG, for an estimated $2,750 a year in fuel.
NHTSA has not published a 5-Star overall rating for this model year.
There are no recalls or owner complaints on file with NHTSA for this model year.
What changed for 2018
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2017 C-Class — a carry-over year in the data.
Compared with 2017; trim, feature and price changes aren't covered. See the 2017 C-Class →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| Amg C63/C63s 2dr Convertible | 187 in | 71.3 in | 55.1 in | 111.8 in | 61.4 / 61 in | 4,206 lb | 53/47 |
| Amg C63/C63s 2dr Coupe | 187 in | 71.3 in | 55.1 in | 111.8 in | 61.4 / 61 in | 4,074 lb | 53/47 |
| C 300 4matic 4dr Sedan | 184.6 in | 71.3 in | 56.7 in | 111.8 in | 62.6 / 61.8 in | 3,583 lb | 55/45 |
| C 300 4matic 4dr Wagon | 185 in | 71.3 in | 57.5 in | 111.8 in | 62.2 / 62.2 in | 3,759 lb | 51/49 |
| C 43 Amg 4matic 4dr Sedan | 184.6 in | 71.3 in | 56.7 in | 111.8 in | 62.6 / 61.8 in | 3,726 lb | 55/45 |
| C 63 Amg 4dr Sedan | 187.4 in | 71.3 in | 56.3 in | 111.8 in | 62.6 / 61.8 in | 3,781 lb | 55/45 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| C350e Plug-in Hybrid | 2.0L 4-cyl turbo | Automatic 7-spd | Rear-Wheel Drive | 28 / 32 / 30 | +11% | $2,750 | 215 |
| C300 | 2.0L 4-cyl turbo | Automatic 9-spd | Rear-Wheel Drive | 24 / 33 / 27 | 0% | $3,050 | 324 |
| C300 4matic | 2.0L 4-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 23 / 32 / 26 | -4% | $3,150 | 335 |
| C300 Coupe | 2.0L 4-cyl turbo | Automatic 9-spd | Rear-Wheel Drive | 22 / 30 / 25 | +5% | $3,300 | 349 |
| C300 4matic Coupe | 2.0L 4-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 22 / 30 / 25 | +5% | $3,300 | 351 |
| C300 4matic Convertible | 2.0L 4-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 22 / 29 / 25 | +5% | $3,300 | 360 |
| C300 Convertible | 2.0L 4-cyl turbo | Automatic 9-spd | Rear-Wheel Drive | 22 / 29 / 25 | +5% | $3,300 | 355 |
| AMG C43 4matic | 3.0L 6-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 20 / 27 / 23 | -15% | $3,550 | 393 |
| AMG C43 4matic Coupe | 3.0L 6-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 20 / 27 / 22 | -7% | $3,750 | 394 |
| AMG C43 4matic Convertible | 3.0L 6-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 19 / 26 / 22 | -7% | $3,750 | 405 |
| AMG C63 | 4.0L 8-cyl turbo | Automatic 7-spd | Rear-Wheel Drive | 18 / 24 / 20 | -26% | $4,100 | 441 |
| AMG C63 S | 4.0L 8-cyl turbo | Automatic 7-spd | Rear-Wheel Drive | 18 / 24 / 20 | -26% | $4,100 | 441 |
| AMG C63 S Convertible | 4.0L 8-cyl turbo | Automatic 7-spd | Rear-Wheel Drive | 17 / 22 / 19 | -20% | $4,350 | 468 |
| AMG C63 Convertible | 4.0L 8-cyl turbo | Automatic 7-spd | Rear-Wheel Drive | 17 / 22 / 19 | -20% | $4,350 | 468 |
| AMG C63 S Coupe | 4.0L 8-cyl turbo | Automatic 7-spd | Rear-Wheel Drive | 17 / 23 / 19 | -20% | $4,350 | 458 |
| AMG C63 Coupe | 4.0L 8-cyl turbo | Automatic 7-spd | Rear-Wheel Drive | 17 / 23 / 19 | -20% | $4,350 | 458 |
EPA estimates; "vs. class" is combined MPG against the 2018 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2018 Mercedes-Benz C-Class.
Similar 2018 compact cars
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2018 Mercedes-Benz C-Class (this car) | 30 MPG | Not rated | 0 |
| 2018 BMW 3 Series | 36 MPG | ★★★★★ | 0 |
| 2018 BMW 5 Series | 30 MPG | Not rated | 0 |
| 2018 Mercedes-Benz E-Class | 25 MPG | ★★★★★ | 0 |
| 2018 Lexus IS | 26 MPG | Not rated | 1 |
| 2018 Tesla Model 3 | 310 mi | ★★★★★ | 19 |
| 2018 Audi A6 | 28 MPG | ★★★★★ | 2 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2018 Mercedes-Benz C-Class.
Check your VIN for open recalls at NHTSA ↗Not every 2018 Mercedes-Benz C-Class is affected — only a VIN check confirms your car.
Owner-reported problems
No owner complaints for the 2018 Mercedes-Benz C-Class in NHTSA's database since 2015.
Used 2018 Mercedes-Benz C-Class buyer's checklist
- Run the VIN at nhtsa.gov/recalls. No recalls on file, but check anyway.
- Hybrid system. Check for hybrid-system warning lights and ask whether the high-voltage battery has been replaced or is still under warranty.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2018 Mercedes-Benz C-Class. Not a substitute for a professional inspection.
Other C-Class years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2027 C-Class | 29 | – | Not rated | 0 | 0 |
| 2026 C-Class | 29 | 188.6 in | Not rated | 0 | 0 |
| 2025 C-Class | 29 | 188.6 in | Not rated | 0 | 0 |
| 2024 C-Class | 30 | 187 in | Not rated | 0 | 0 |
| 2023 C-Class | 29 | 187 in | Not rated | 0 | 0 |
| 2022 C-Class | 29 | 187 in | Not rated | 0 | 0 |
| 2021 C-Class | 27 | 187 in | Not rated | 0 | 0 |
| 2020 C-Class | 28 | 187 in | Not rated | 0 | 0 |
| 2019 C-Class | 27 | 187 in | Not rated | 0 | 0 |
| 2017 C-Class | 30 | 187 in | Not rated | 0 | 0 |
| 2016 C-Class | 30 | 184.6 in | Not rated | 0 | 0 |
| 2015 C-Class | 28 | 184.6 in | Not rated | 0 | 0 |
Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Mercedes-Benz. How we calculate this →