2020 head-to-head · Two-Seater
2020 Alfa Romeo 4C vs Porsche Cayman
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 · 1.8L 4-cyl turbo · 6-speed dual-clutch · 28 MPG
The 2020 Alfa Romeo 4C 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 $2,469 for the 2020 Porsche Cayman (24 MPG). That's roughly $353 a year, or about $1,763 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
- Alfa Romeo 4C
- Porsche Cayman
Side by side
| Alfa Romeo 4C | Porsche Cayman | |
|---|---|---|
| $2,116 | Your annual fuel cost | $2,469 |
| 28 MPG | Combined efficiency | 24 MPG |
| 24 MPG | City | 21 MPG |
| 34 MPG | Highway | 27 MPG |
| 317 g/mi | Tailpipe CO₂ (g/mi) | 375 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 |
| 1.8L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 6-speed dual-clutch | 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.
Alfa Romeo 4C vs Porsche Cayman across model years
- Alfa Romeo 4C
- Porsche Cayman
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 39 2020 two-seaters, the Alfa Romeo 4C ranks 4th and the Porsche Cayman 10th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2020 Alfa Romeo 4C or the 2020 Porsche Cayman?
Measured by cost to drive, the Alfa Romeo 4C. The Alfa Romeo 4C is rated 28 MPG combined and the Porsche Cayman 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Alfa Romeo 4C vs. the Porsche Cayman per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,116 for the Alfa Romeo 4C and $2,469 for the Porsche Cayman.
Alfa Romeo 4C vs Porsche Cayman in other years
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