BMW 5 Series vs Porsche Taycan
The Porsche Taycan is the more efficient of the two: it reaches 93 mpg combined versus 31 mpg for the BMW 5 Series, a 62 mpg advantage and costs about $1,650 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 | BMW 5 Series | Porsche Taycan |
|---|---|---|
| Best combined MPG | 31 mpg | 93 mpg ✓ |
| Best city MPG | 29 mpg | 94 mpg ✓ |
| Best highway MPG | 38 mpg | 92 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $2,450 | $800 ✓ |
| Lowest CO2 output | 133 g/mi | Not available |
| Engines offered | SIDI & PFI; PHEV, SIDI & PFI; Mild Hybrid, SIDI; PHEV, 2.0 | Not available |
| Transmissions | Automatic (S8) | Automatic (A2) |
| Drivetrains | All-Wheel Drive, Rear-Wheel Drive | All-Wheel Drive, Rear-Wheel Drive |
| Fuel types | Premium and Electricity, Premium, Diesel | Electricity |
| EPA class | Midsize Cars | Compact Cars |
| Years covered | 2015–2027 | 2020–2026 |
| Configurations on record | 85 | 84 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
5 Series vs Taycan: common questions
Which is better on gas, the BMW 5 Series or the Porsche Taycan?
The Porsche Taycan is the more efficient of the two: it reaches 93 mpg combined versus 31 mpg for the BMW 5 Series, a 62 mpg advantage and costs about $1,650 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 $2,450 for the BMW 5 Series — a difference of roughly $1,650 per year.
What engines do the 5 Series and Taycan offer?
BMW 5 Series: SIDI & PFI; PHEV, SIDI & PFI; Mild Hybrid, SIDI; PHEV, 2.0. Porsche Taycan: no engine data on record.
Are they in the same vehicle class?
The EPA classifies the BMW 5 Series as Midsize Cars and the Porsche Taycan as Compact Cars, so they aren't a like-for-like match on size.
More 5 Series comparisons
Comparison id: bmw-5-series-vs-porsche-taycan