2026 head-to-head · Compact Car
2026 BMW i5 vs Porsche Taycan
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2026 BMW i5 is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity, it costs about $826 a year to fuel (110 MPGe), versus $977 for the 2026 Porsche Taycan (93 MPGe). That's roughly $151 a year, or about $756 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- BMW i5
- Porsche Taycan
Side by side
| BMW i5 | Porsche Taycan | |
|---|---|---|
| $826 | Your annual fuel cost | $977 |
| 110 MPGe | Combined efficiency | 93 MPGe |
| 114 MPGe | City | 94 MPGe |
| 106 MPGe | Highway | 92 MPGe |
| 30.6 kWh | Electricity use (kWh/100 mi) | 36.2 kWh |
| 310 mi | Driving range | 315 mi |
| 98 cu ft | Passenger volume | 89 cu ft |
| 11 cu ft | Cargo volume | 12 cu ft |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 9/10 | EPA fuel economy score | 9/10 |
| 10/10 | EPA greenhouse gas score | 10/10 |
| 8 hrs | Charge time at 240V | 13 hrs |
| Electric | Powertrain | Electric |
| Electricity | Fuel | Electricity |
| Electric motor (250 kW) | Engine / motor | Electric motors (325 kW) |
| Single-speed | Transmission | 2-speed automatic |
| RWD | Drivetrain | AWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
BMW i5 vs Porsche Taycan across model years
- BMW i5
- Porsche Taycan
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
The Porsche Taycan goes farther between stops: about 315 miles on a charge, compared with 310 miles for the BMW i5.
Per EPA interior volume figures, the BMW i5 has more passenger space (98 vs. 89 cu ft); the Porsche Taycan has more cargo space (12 vs. 11 cu ft).
Among 21 2026 compact cars, the BMW i5 ranks 3rd and the Porsche Taycan 5th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 BMW i5 or the 2026 Porsche Taycan?
Measured by cost to drive, the BMW i5. The BMW i5 is rated 110 MPGe combined and the Porsche Taycan 93 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 BMW i5 vs. the Porsche Taycan per year?
At 15,000 miles a year with 18¢/kWh electricity, about $826 for the BMW i5 and $977 for the Porsche Taycan.
Which has more range?
The Porsche Taycan: about 315 miles versus 310 miles.
Which has more cargo space?
The Porsche Taycan, with 12 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
BMW i5 vs Porsche Taycan in other years
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