Fuel economy details

Bertone X1/9 1989

EPA fuel-economy estimates for 1 version of this vehicle. Review the published configuration below.

22combined MPG

20 / 26city / highway MPG

$3,050estimated annual fuel cost

How to use these estimates

EPA ratings use standardized city and highway tests, making them a useful starting point for comparing similar vehicles. For model years with several versions, choose the powertrain that matches the vehicle you are considering before relying on a rating.

Your actual fuel or electricity use can vary with weather, payload, driving style, maintenance, and local prices.

(FFS) · Manual 5-spd

22 combined MPG

Fuel typeRegular Gasoline

Vehicle classTwo Seaters

DriveRear-Wheel Drive

TransmissionManual 5-spd

Tailpipe CO₂403 g/mi

EPA base modelX1/9

Efficiency and cost

Estimated annual petroleum use: 13.5 barrels
Five-year fuel-cost comparison: costs $3,250 more

EPA class benchmark

Compared with 22 EPA records from 1989 in this vehicle class and fuel type.

Efficiency position: At or above 64%
Combined MPG vs median: 2.5 MPG above the class median.
Annual cost vs median: $400 lower than the class median.

Where these numbers come from

Source: EPA FuelEconomy.gov. This page was last updated on October 3, 2026. Learn more about how we use vehicle data.