1991 Nissan NX Coupe: MPG and fuel economy
The 1991 Nissan NX Coupe is rated by the U.S. Environmental Protection Agency at 28 combined MPG, with 24 MPG in the city and 35 MPG on the highway. That puts it well above the average for cars in the Minicompact Cars class in the same model year.
This page collects every fuel-economy figure the EPA publishes for the 1991 Nissan NX Coupe. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. The EPA rates 4 separate variants of this car (different engine, transmission, or drivetrain combinations), and you can compare them side by side in the trims table.
Key takeaways
- Returns 44% better combined MPG than the average car in the Minicompact Cars class for the 1991 model year (19.5 MPG class average).
- The 1991 Nissan NX Coupe is the most efficient car in the Minicompact Cars class for the 1991 model year, with its 28 MPG rating leading the segment.
Fuel economy at a glance
These are the EPA's official ratings for the 1991 Nissan NX Coupe. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
When the EPA tests several variants of the same nameplate (for example, a front-wheel-drive version and an all-wheel-drive version), each gets its own rating. The figures shown here are the headline variant, taken as the configuration with the best combined MPG. The trims table further down covers all 4 variants side by side.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 28 MPG |
| City MPG | 24 MPG |
| Highway MPG | 35 MPG |
| Annual fuel cost | $2,150 |
| Tailpipe CO₂ | 317 g/mi |
| Fuel type | Regular |
How the 1991 Nissan NX Coupe compares
The 1991 Nissan NX Coupe returns 28 combined MPG. Cars in the Minicompact Cars class for the same model year average 19.5 MPG, which puts this car ahead of the class average by about 44%.
Within the Minicompact Cars class for the 1991 model year, the Nissan NX Coupe is the leader. No other car in the same class beat its 28 MPG rating. The bar chart below shows it alongside the class average and the average new car for some additional context.
For broader context, the average new car of the 1991 model year (across all classes) returns 18.7 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 1991 model year is on its own page.
Trim variants rated for 1991
The EPA rates 4 separate variants of the 1991 Nissan NX Coupe. The differences come from the engine size, transmission type, and drivetrain (front-wheel drive, all-wheel drive, and so on). The same nameplate can land several MPG apart depending on the configuration you actually buy.
The most efficient configuration on this page returns 28 MPG, while the least efficient returns 22 MPG. That is a spread of 6 MPG between trims of the same nameplate.
| Engine and transmission | Drive | Combined | City | Highway | Annual cost |
|---|---|---|---|---|---|
| 1.6L, 4-cyl, Manual 5-spd | Front-Wheel Drive | 28 MPG | 24 MPG | 35 MPG | $2,150 |
| 1.6L, 4-cyl, Automatic 4-spd | Front-Wheel Drive | 27 MPG | 23 MPG | 33 MPG | $2,200 |
| 2L, 4-cyl, Manual 5-spd | Front-Wheel Drive | 23 MPG | 21 MPG | 28 MPG | $2,600 |
| 2L, 4-cyl, Automatic 4-spd | Front-Wheel Drive | 22 MPG | 20 MPG | 27 MPG | $2,700 |
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for regular gasoline, which is $3.99/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 535.7 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $1,075 |
| Average driver, 15,000 miles per year | $2,150 |
| Heavy driver, 25,000 miles per year | $3,583 |
Compare against other Minicompact Cars for 1991
If you are cross-shopping the 1991 Nissan NX Coupe, the most useful comparison is against the other cars in the Minicompact Cars class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
Specifications
The 1991 Nissan NX Coupe runs a 1.6-liter 4-cylinder engine paired with a manual 5-spd, sending power through front-wheel drive.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Minicompact Cars
- Engine
- 1.6L 4-cylinder
- Transmission
- Manual 5-spd
- Drivetrain
- Front-Wheel Drive
- Fuel type
- Regular
- Annual petroleum use
- 10.6 barrels per year
Common questions about the 1991 Nissan NX Coupe
Quick answers to the questions people most often search for when looking up the 1991 Nissan NX Coupe.
-
Is the 1991 Nissan NX Coupe fuel efficient?
Yes. The 1991 Nissan NX Coupe returns 28 combined MPG, which beats the average car in the Minicompact Cars class for the same model year by about 44%. -
What MPG does the 1991 Nissan NX Coupe get?
The EPA rates the 1991 Nissan NX Coupe at 28 combined MPG, 24 MPG in city driving, and 35 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 1991 Nissan NX Coupe per year?
The EPA estimates an annual fuel cost of $2,150 for the 1991 Nissan NX Coupe. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
What fuel does the 1991 Nissan NX Coupe use?
The EPA lists the 1991 Nissan NX Coupe as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity. -
How much CO₂ does the 1991 Nissan NX Coupe emit?
Tailpipe CO₂ emissions are 317 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 4,761 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 1991 Nissan NX Coupe?
City driving returns 24 MPG and highway driving returns 35 MPG, a gap of 11 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise. -
What engine is in the 1991 Nissan NX Coupe?
The 1991 Nissan NX Coupe has a 1.6-liter 4-cylinder engine (EPA description: (FFS)). -
What transmission and drivetrain does the 1991 Nissan NX Coupe have?
The 1991 Nissan NX Coupe comes with a manual 5-spd transmission and front-wheel drive. -
Is the 1991 Nissan NX Coupe the most efficient car in its class?
Yes. Among cars in the Minicompact Cars class for the 1991 model year, the Nissan NX Coupe returns the highest combined MPG at 28 MPG. No other car in the same class beats that figure. -
How much petroleum does the 1991 Nissan NX Coupe use per year?
The EPA estimates the 1991 Nissan NX Coupe consumes about 10.6 barrels of petroleum per year, based on the standard 15,000 miles of driving. A barrel is 42 U.S. gallons of crude oil, which is refined into gasoline plus other products.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.