1991 Wallace Environmental Wetl 560 SL MPG & Specs — Real Fuel Cost
Quick answer
The 1991 Wallace Environmental Wetl 560 SL gets an EPA-estimated 11/15 MPG (city/highway) and 13 MPG combined, with an estimated $5,850/year fuel cost and 683.615 g/mi CO₂. Engine: 5.6 L 8-cyl.
The 1991 Wallace Environmental Wetl 560 SL with the 5.6-liter 8-cylinder premium gasoline engine returns an EPA-estimated 11 MPG in the city and 15 MPG on the highway, for a combined 13 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 5.6 L 8-cyl |
| Transmission | Automatic 4-spd |
| Drive | Rear-Wheel Drive |
| Fuel type | Premium Gasoline |
| Vehicle class | Two Seaters |
| MPG — city | 11 |
| MPG — highway | 15 |
| MPG — combined | 13 |
| Annual fuel cost* | $5,850 |
| CO₂ tailpipe | 683.615 g/mi |
| EPA GHG score | — |
How efficient is it?
With a combined 13 MPG, the 1991 Wallace Environmental Wetl 560 SL sits in the low range for fuel economy. That is roughly 35% thirstier than the typical Two Seaters of its era (20 MPG class average) — expect higher fuel bills than class-average alternatives.
Fuel economy and running costs
At about $5,850 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 1991 Wallace Environmental Wetl 560 SL. Over five years that is roughly $29,250 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 1991 Wallace Environmental Wetl 560 SL emits approximately 683.615 grams of CO₂ per mile at the tailpipe. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.