MPGTerminal
45/100
2021Subcompact CarsPremium

2021 Mercedes-Benz C300 4matic Coupe

EPA ID: 43333
23
City MPG
26
Combined MPG
26MPG· Average
32
Highway MPG

Fuel Economy Overview

The 2021 Mercedes-Benz C300 4matic Coupe achieves an EPA-estimated 26 MPG in combined city and highway driving, with 23 MPG in the city and 32 MPG on the highway. Powered by a 2L 4-cylinder turbocharged engine paired with a automatic 9-spd, this subcompact cars features 4-Wheel Drive drive.

In terms of environmental impact, the 2021 C300 4matic Coupe produces approximately 338 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this C300 4matic Coupe performs better than the national average in this regard.

The estimated annual fuel cost for this vehicle is $2,650, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $2,500 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.

Energy DNA

Vehicle ClassSubcompact Cars
Fuel TypePremium
Engine2L 4-cyl
AspirationTurbocharged
TransmissionAutomatic 9-spd
Drive Type4-Wheel Drive

Green Scorecard

CO2 Emissions338 g/mi
Start-Stop SystemEquipped
GHG Score5/10
Smog RatingN/A
Est. Annual Cost$2,650
5-Year Cost DeltaSave $2,500

Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy

55% City45% Highway

Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.

Your Real MPG
26.3
Impact vs EPA
$-26
/ year
💨

Aerodynamic Speed Penalty

EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Expect your real-world highway fuel economy to drop by roughly 15-20% at interstate speeds.

5-Year Total Cost of Ownership

Estimated Monthly Cost
$619/mo
Includes estimated depreciation, fuel, insurance, and state fees over 5 years. Does not include loan interest.
15,000 mi
Value Depreciation
Est. value lost over 60 months
$17,500
47.1%
Fuel & Electricity
Based on National Average rates ($3.50/gal)
$10,096
27.2%
Estimated Insurance
Based on vehicle class risk profile
$9,125
24.6%
State Registration Fees
Based on National Average DMV base rates
$400
1.1%
Total 5-Year Cost$37,121

Recall Intelligence

✓ No recalls have been issued for this vehicle configuration.

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Looking for comprehensive historical data?

NHTSA FARS (Fatal Crash History) and broader generational safety trends are aggregated at the model level rather than by specific engine configurations. View the complete historical data profile for all Mercedes-Benz C300 4matic Coupe configurations.

View Model History

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Fuel Cost Analysis

Annual Fuel Cost$2,650
vs. Avg Vehicle (5 yrs)Save $2,500

Based on 15,000 miles/year and current fuel prices.

Efficiency Breakdown

City23 MPG
Highway32 MPG
Combined26 MPG

Estimated Lifetime Carbon Footprint

(Based on 200,000 miles driven)

67.6 metric tons CO₂
Equivalent To:
🌳 84 tree seedlings grown for 10 yrs
✈️ 5.6 cross-country flights/yr

Data Provenance

Data directly from the EPA National Vehicle and Fuel Emissions Laboratory. The combined rating is a weighted average (55% city, 45% highway). For official figures, visit fueleconomy.gov.