Porsche Panamera vs Mercedes-Benz EQS
The Mercedes-Benz EQS is the more efficient of the two: it reaches 103 mpg combined versus 25 mpg for the Porsche Panamera, a 78 mpg advantage and costs about $2,350 less per year to fuel.
Across 4 measured categories, the Mercedes-Benz EQS leads in 4. Figures are EPA test data, not manufacturer claims.
2015–2026
Porsche Panamera
Large Cars · 139 configurations
2022–2027
Mercedes-Benz EQS
Large Cars · 32 configurations
Head-to-head specifications
| Metric | Porsche Panamera | Mercedes-Benz EQS |
|---|---|---|
| Best combined MPG | 25 mpg | 103 mpg ✓ |
| Best city MPG | 23 mpg | 101 mpg ✓ |
| Best highway MPG | 29 mpg | 105 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $3,050 | $700 ✓ |
| Lowest CO2 output | 185 g/mi | Not available |
| Engines offered | SIDI, SIDI; PHEV, 2.9, 4.0 | Not available |
| Transmissions | Automatic (AM-S8), Automatic (AM-S7) | Automatic (A1) |
| Drivetrains | All-Wheel Drive, Rear-Wheel Drive, 4-Wheel Drive | All-Wheel Drive, Rear-Wheel Drive |
| Fuel types | Premium, Premium and Electricity, Premium Gas or Electricity | Electricity |
| EPA class | Large Cars | Large Cars |
| Years covered | 2015–2026 | 2022–2027 |
| Configurations on record | 139 | 32 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Panamera vs EQS: common questions
Which is better on gas, the Porsche Panamera or the Mercedes-Benz EQS?
The Mercedes-Benz EQS is the more efficient of the two: it reaches 103 mpg combined versus 25 mpg for the Porsche Panamera, a 78 mpg advantage and costs about $2,350 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Mercedes-Benz EQS runs about $700 a year in fuel at its most efficient configuration, versus about $3,050 for the Porsche Panamera — a difference of roughly $2,350 per year.
What engines do the Panamera and EQS offer?
Porsche Panamera: SIDI, SIDI; PHEV, 2.9, 4.0. Mercedes-Benz EQS: no engine data on record.
Are they in the same vehicle class?
Yes — the EPA classifies both the Porsche Panamera and the Mercedes-Benz EQS as Large Cars, so they compete directly.
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Comparison id: porsche-panamera-vs-mercedes-benz-eqs