2019 head-to-head · Two-Seater
2019 BMW Z4 vs Porsche Boxster
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
RWD · 2.0L 4-cyl turbo · 8-speed automatic · 28 MPG
The 2019 BMW Z4 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,116 a year to fuel (28 MPG), versus $2,370 for the 2019 Porsche Boxster (25 MPG). That's roughly $254 a year, or about $1,270 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 Z4
- Porsche Boxster
Side by side
| BMW Z4 | Porsche Boxster | |
|---|---|---|
| $2,116 | Your annual fuel cost | $2,370 |
| 28 MPG | Combined efficiency | 25 MPG |
| 25 MPG | City | 22 MPG |
| 32 MPG | Highway | 29 MPG |
| 321 g/mi | Tailpipe CO₂ (g/mi) | 353 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 6/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 7-speed dual-clutch |
| RWD | Drivetrain | RWD |
✓ 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 Z4 vs Porsche Boxster across model years
- BMW Z4
- Porsche Boxster
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
Among 34 2019 two-seaters, the BMW Z4 ranks 5th and the Porsche Boxster 9th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2019 BMW Z4 or the 2019 Porsche Boxster?
Measured by cost to drive, the BMW Z4. The BMW Z4 is rated 28 MPG combined and the Porsche Boxster 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2019 BMW Z4 vs. the Porsche Boxster per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,116 for the BMW Z4 and $2,370 for the Porsche Boxster.
BMW Z4 vs Porsche Boxster in other years
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