Porsche Taycan vs BMW 3 Series
The Porsche Taycan is the more efficient of the two: it reaches 93 mpg combined versus 36 mpg for the BMW 3 Series, a 57 mpg advantage and costs about $1,400 less per year to fuel.
Across 4 measured categories, the Porsche Taycan leads in 4. Figures are EPA test data, not manufacturer claims.
2020–2026
Porsche Taycan
Compact Cars · 84 configurations
Head-to-head specifications
| Metric | Porsche Taycan | BMW 3 Series |
|---|---|---|
| Best combined MPG | 93 mpg ✓ | 36 mpg |
| Best city MPG | 94 mpg ✓ | 31 mpg |
| Best highway MPG | 92 mpg ✓ | 43 mpg |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $800 ✓ | $2,200 |
| Lowest CO2 output | Not available | 158 g/mi |
| Engines offered | Not available | SIDI & PFI; Mild Hybrid, SIDI, SIDI; PHEV, SIDI; Mild Hybrid |
| Transmissions | Automatic (A2) | Automatic (S8), Manual 6-spd |
| Drivetrains | All-Wheel Drive, Rear-Wheel Drive | Rear-Wheel Drive, All-Wheel Drive |
| Fuel types | Electricity | Premium, Premium and Electricity, Diesel |
| EPA class | Compact Cars | Compact Cars |
| Years covered | 2020–2026 | 2015–2026 |
| Configurations on record | 84 | 105 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Taycan vs 3 Series: common questions
Which is better on gas, the Porsche Taycan or the BMW 3 Series?
The Porsche Taycan is the more efficient of the two: it reaches 93 mpg combined versus 36 mpg for the BMW 3 Series, a 57 mpg advantage and costs about $1,400 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Porsche Taycan runs about $800 a year in fuel at its most efficient configuration, versus about $2,200 for the BMW 3 Series — a difference of roughly $1,400 per year.
What engines do the Taycan and 3 Series offer?
Porsche Taycan: no engine data on record. BMW 3 Series: SIDI & PFI; Mild Hybrid, SIDI, SIDI; PHEV, SIDI; Mild Hybrid.
Are they in the same vehicle class?
Yes — the EPA classifies both the Porsche Taycan and the BMW 3 Series as Compact Cars, so they compete directly.
More Taycan comparisons
Comparison id: porsche-taycan-vs-bmw-3-series