2026 head-to-head · Compact Car
2026 BMW i4 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 i4 is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity, it costs about $769 a year to fuel (118 MPGe), versus $977 for the 2026 Porsche Taycan (93 MPGe). That's roughly $208 a year, or about $1,040 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 i4
- Porsche Taycan
Side by side
| BMW i4 | Porsche Taycan | |
|---|---|---|
| $769 | Your annual fuel cost | $977 |
| 118 MPGe | Combined efficiency | 93 MPGe |
| 121 MPGe | City | 94 MPGe |
| 115 MPGe | Highway | 92 MPGe |
| 28.5 kWh | Electricity use (kWh/100 mi) | 36.2 kWh |
| 333 mi | Driving range | 315 mi |
| 90 cu ft | Passenger volume | 89 cu ft |
| 10 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 |
| 9 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 i4 vs Porsche Taycan across model years
- BMW i4
- 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 BMW i4 goes farther between stops: about 333 miles on a charge, compared with 315 miles for the Porsche Taycan.
Per EPA interior volume figures, the Porsche Taycan has more cargo space (12 vs. 10 cu ft).
Among 21 2026 compact cars, the BMW i4 ranks 2nd and the Porsche Taycan 5th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 BMW i4 or the 2026 Porsche Taycan?
Measured by cost to drive, the BMW i4. The BMW i4 is rated 118 MPGe combined and the Porsche Taycan 93 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 BMW i4 vs. the Porsche Taycan per year?
At 15,000 miles a year with 18¢/kWh electricity, about $769 for the BMW i4 and $977 for the Porsche Taycan.
Which has more range?
The BMW i4: about 333 miles versus 315 miles.
Which has more cargo space?
The Porsche Taycan, with 12 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
BMW i4 vs Porsche Taycan in other years
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