Mercedes-Benz C300 vs Porsche 911
Head-to-head specifications
| Metric | Mercedes-Benz C300 | Porsche 911 | Difference |
|---|---|---|---|
| Max power (hp) | 255 | 711 | -64.1% |
| Max torque (Nm) | 400 | 800 | -50.0% |
| Fuel economy (km/L) | 11.5 | 8.9 | +29.2% |
| Fuel type | Petrol | Petrol | — |
| Transmission | 9-Speed Shiftable Automatic | PDK | — |
| Price (USD est.) | $52,800 | $238,140 | -77.8% |
- Porsche 911 makes about 64% more power (711 vs 255 hp).
- Mercedes-Benz C300 is the more economical, at 11.5 km/L against 8.9.
- Prices are converted to USD from their home markets (US and Germany); taxes and availability differ by country.
Verdict: C300 or 911?
Mercedes-Benz C300 advantages
- Fuel economy (+23%)
- Affordability (+78%)
Porsche 911 advantages
- Engine power (+64%)
- Pulling torque (+50%)
Which should you choose?
- Choose the Mercedes-Benz C300 if you drive a lot and fuel costs matter.
- Choose the Porsche 911 if you want stronger performance and overtaking confidence.
- Choose the Mercedes-Benz C300 if you want the lower upfront cost.
Value for money
Mercedes-Benz C300 delivers more horsepower per dollar, making it the better value of the two at their listed prices.
Mercedes-Benz C300 vs Porsche 911: which should you choose?
Mercedes-Benz C300 (2026 Exclusive 4MATIC) — petrol sedan with 255 hp and 400 Nm, rated at 11.5 km/L, 5-star NHTSA safety; priced near $52,800 in the US market.
Porsche 911 (2026 Turbo S Hybrid) — petrol coupe with 711 hp and 800 Nm, rated at 8.9 km/L; priced near $238,140 in the Germany market.
Mercedes-Benz C300 vs Porsche 911: Porsche 911 is more powerful. Porsche 911 makes about 64% more power (711 vs 255 hp). Mercedes-Benz C300 is the more economical, at 11.5 km/L against 8.9.
Performance
The Porsche 911 is the more powerful, at 711 hp against 255 hp, with 800 Nm of torque on tap. Its petrol drivetrain pairs with a pdk transmission.
Running costs
The Mercedes-Benz C300 is more economical at 11.5 km/L against 8.9 km/L on their certified cycles, which compounds meaningfully over years of ownership. Test cycles differ between markets, so treat cross-region figures as directional.
Price and value
The Mercedes-Benz C300 lists lower at about $52,800 (USD-converted from the US market). Factor in insurance, fuel or charging, taxes and resale — not just the sticker price.
The verdict
Both are credible choices in the car comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the Mercedes-Benz C300 better than the Porsche 911?
These two are closely matched — the right pick comes down to which specific strengths you value and the price you actually pay. Porsche 911 makes about 64% more power (711 vs 255 hp).
What is the main difference between the Mercedes-Benz C300 and the Porsche 911?
Porsche 911 makes about 64% more power (711 vs 255 hp). Mercedes-Benz C300 is the more economical, at 11.5 km/L against 8.9.
Which is better value?
Mercedes-Benz C300 delivers more horsepower per dollar, making it the better value of the two at their listed prices.
Which should I choose?
Choose the Mercedes-Benz C300 if you drive a lot and fuel costs matter. Choose the Porsche 911 if you want stronger performance and overtaking confidence.
Methodology
Cars are compared on manufacturer-rated maximum power and torque, certified fuel economy (km/L, converted from each market's test cycle: EPA, WLTP, CLTC, JC08/WLTC, ARAI) or EV energy use (kWh/100km), official NCAP crash-test ratings from the model's home-market programme, and list prices converted to USD at recent exchange rates. Each model shows its newest listed year and its highest-priority market trim. Test cycles differ between regions, so cross-market economy figures are directional rather than exact; prices exclude local taxes and incentives.