The 2018 Mercedes-Benz C-Class delivers an EPA-certified 19–27 MPG combined across 21 configurations. Estimated annual fuel costs range from $2,550 to $4,000.
Factual efficiency differences across gasoline, hybrid, plug-in hybrid, and electric variants
Annual Fuel Cost: $2,800–$4,000.
Gasoline Combined: 30 MPG • Annual Cost: $2,550.
Laboratory certification test values across engine, transmission, and drivetrain permutations
| Configuration / Model | Powertrain | Drivetrain | Transmission | City | Highway | Combined | EV Range | Annual Fuel Cost | CO2 (g/mi) |
|---|---|---|---|---|---|---|---|---|---|
| C350e Premium and Electricity | 2L Plug-in Hybrid | Rear-Wheel Drive | Automatic 7-spd | 45 MPGe (28 MPG) | 61 MPGe (32 MPG) | 51 MPGe (30 MPG) | 9 mi | $2,550 | — |
| SLC300 Premium | 2L 4-Cyl Gas | Rear-Wheel Drive | Automatic 9-spd | 25 MPG | 32 MPG | 27 MPG | — | $2,800 | — |
| C300 Premium | 2L 4-Cyl Gas | Rear-Wheel Drive | Automatic 9-spd | 24 MPG | 33 MPG | 27 MPG | — | $2,800 | — |
| C300 4matic Premium | 2L 4-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 23 MPG | 32 MPG | 26 MPG | — | $2,900 | — |
| GLC350e 4matic Premium and Electricity | 2L Plug-in Hybrid | 4-Wheel Drive | Automatic 7-spd | 55 MPGe (24 MPG) | 57 MPGe (27 MPG) | 56 MPGe (25 MPG) | 10 mi | $3,050 | — |
| C300 Coupe Premium | 2L 4-Cyl Gas | Rear-Wheel Drive | Automatic 9-spd | 22 MPG | 30 MPG | 25 MPG | — | $3,050 | — |
| C300 4matic Coupe Premium | 2L 4-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 22 MPG | 30 MPG | 25 MPG | — | $3,050 | — |
| C300 4matic Convertible Premium | 2L 4-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 22 MPG | 29 MPG | 25 MPG | — | $3,050 | — |
| C300 Convertible Premium | 2L 4-Cyl Gas | Rear-Wheel Drive | Automatic 9-spd | 22 MPG | 29 MPG | 25 MPG | — | $3,050 | — |
| GLC300 Premium | 2L 4-Cyl Gas | Rear-Wheel Drive | Automatic 9-spd | 22 MPG | 28 MPG | 24 MPG | — | $3,150 | — |
| GLC300 4matic Premium | 2L 4-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 21 MPG | 28 MPG | 24 MPG | — | $3,150 | — |
| GLC300 4matic Coupe Premium | 2L 4-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 22 MPG | 27 MPG | 24 MPG | — | $3,150 | — |
| AMG C43 4matic Premium | 3L 6-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 20 MPG | 27 MPG | 23 MPG | — | $3,300 | — |
| AMG C43 4matic Coupe Premium | 3L 6-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 20 MPG | 27 MPG | 22 MPG | — | $3,450 | — |
| AMG C43 4matic Convertible Premium | 3L 6-Cyl Gas | 4-Wheel Drive | Automatic 9-spd | 19 MPG | 26 MPG | 22 MPG | — | $3,450 | — |
| AMG C63 Premium | 4L 8-Cyl Gas | Rear-Wheel Drive | Automatic 7-spd | 18 MPG | 24 MPG | 20 MPG | — | $3,800 | — |
| AMG C63 S Premium | 4L 8-Cyl Gas | Rear-Wheel Drive | Automatic 7-spd | 18 MPG | 24 MPG | 20 MPG | — | $3,800 | — |
| AMG C63 S Convertible Premium | 4L 8-Cyl Gas | Rear-Wheel Drive | Automatic 7-spd | 17 MPG | 22 MPG | 19 MPG | — | $4,000 | — |
| AMG C63 Convertible Premium | 4L 8-Cyl Gas | Rear-Wheel Drive | Automatic 7-spd | 17 MPG | 22 MPG | 19 MPG | — | $4,000 | — |
| AMG C63 S Coupe Premium | 4L 8-Cyl Gas | Rear-Wheel Drive | Automatic 7-spd | 17 MPG | 23 MPG | 19 MPG | — | $4,000 | — |
| AMG C63 Coupe Premium | 4L 8-Cyl Gas | Rear-Wheel Drive | Automatic 7-spd | 17 MPG | 23 MPG | 19 MPG | — | $4,000 | — |
Standardized annual energy consumption and operating cost metrics based on 15,000 annual miles
Based on $3.50 per gallon regular gasoline
Estimated annual energy units needed for 15,000 miles
Compared to the average new vehicle over 5 years
Cross-reference safety ratings, owner defect complaints, and recall campaigns
Vehicle summary, specifications, and primary KPI metrics.
NHTSA 5-Star NCAP crash tests, rollover risk, and active driver assistance.
NHTSA consumer defect complaint filings by affected component.
Official safety recall notices, defects, and free repair instructions.
Direct, deterministic answers synthesized from verified United States government databases for the 2018 Mercedes-Benz C-Class
The 2018 Mercedes-Benz C-Class achieves an EPA-certified rating of 19 to 27 MPG combined across 21 certified configuration(s).
City ratings range from 17 to 27 MPG, and highway ratings range from 19 to 33 MPG.
The 2018 Mercedes-Benz C-Class plug-in hybrid (PHEV) delivers up to 0 miles of all-electric driving range before transitioning to hybrid gasoline operation.
In electric mode, efficiency is rated at 30 MPGe, switching to 0 MPG combined on gasoline.
Using AutoUtility's standardized operating cost model, estimated annual fueling and energy costs range between $2,550 and $4,000 for the 2018 Mercedes-Benz C-Class.
Calculated under AutoUtility's standardized methodology (15,000 miles per year, 55% city / 45% highway driving, $3.50/gallon regular gasoline, $0.16/kWh electricity) using official EPA dynamometer consumption ratings.
Fuel economy ratings, electric range figures, and energy cost estimates on this page are retrieved directly from the United States Environmental Protection Agency (EPA) and U.S. Department of Energy (FuelEconomy.gov) certified vehicle database under 40 CFR Part 600.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.