1989 Jaguar XJS Convertible: MPG and fuel economy
The 1989 Jaguar XJS Convertible is rated by the U.S. Environmental Protection Agency at 13 combined MPG, with 11 MPG in the city and 15 MPG on the highway. That lands well below the average for cars in the Two Seaters class in the same model year.
This page collects every fuel-economy figure the EPA publishes for the 1989 Jaguar XJS Convertible. 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 2 separate variants of this car (different engine, transmission, or drivetrain combinations), and you can compare them side by side in the trims table. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.
Key takeaways
- Returns 29% worse combined MPG than the average car in the Two Seaters class for the 1989 model year (18.4 MPG class average).
- The most efficient car in the Two Seaters class for the 1989 model year is the Honda Civic CRX HF at 44 MPG.
- The Jaguar XJS Convertible has gained 5 MPG since its first rated model year, the 1989 Jaguar XJS Convertible at 13 MPG.
- EPA estimates this car costs around $12,250 more in fuel over five years than an average new vehicle of the same model year.
- Subject to the federal Gas Guzzler Tax, which applies to passenger cars rated below 22.5 combined MPG.
Fuel economy at a glance
These are the EPA's official ratings for the 1989 Jaguar XJS Convertible. 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 2 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 | 13 MPG |
| City MPG | 11 MPG |
| Highway MPG | 15 MPG |
| Annual fuel cost | $4,600 |
| Tailpipe CO₂ | 684 g/mi |
| Fuel type | Regular |
How the 1989 Jaguar XJS Convertible compares
The 1989 Jaguar XJS Convertible returns 13 combined MPG. Cars in the Two Seaters class for the same model year average 18.4 MPG, which puts this car behind the class average by about 29%.
The most efficient car in the Two Seaters class for the 1989 model year is the Honda Civic CRX HF at 44 MPG. The bar chart below puts the Jaguar XJS Convertible alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 1989 model year (across all classes) returns 19.4 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 1989 model year is on its own page.
Trim variants rated for 1989
The EPA rates 2 separate variants of the 1989 Jaguar XJS Convertible. 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.
| Engine and transmission | Drive | Combined | City | Highway | Annual cost |
|---|---|---|---|---|---|
| 5.3L, 12-cyl, Automatic 3-spd | Rear-Wheel Drive | 13 MPG | 11 MPG | 15 MPG | $4,600 |
| 5.3L, 12-cyl, Automatic 3-spd | Rear-Wheel Drive | 13 MPG | 11 MPG | 15 MPG | $4,600 |
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 1153.8 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $2,300 |
| Average driver, 15,000 miles per year | $4,600 |
| Heavy driver, 25,000 miles per year | $7,667 |
Year-over-year MPG for the Jaguar XJS Convertible
The EPA has rated the Jaguar XJS Convertible across 8 model years, from 1989 Jaguar XJS Convertible through 1996 Jaguar XJS Convertible. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.
The 1989 Jaguar XJS Convertible returned 13 MPG. The most recent 1996 Jaguar XJS Convertible returns 18 MPG. That is an improvement of 5 MPG over 7 model years, the kind of gain that usually comes from smaller engines, hybrid systems, or aerodynamic redesigns.
| Year | Combined MPG | Open year page |
|---|---|---|
| 1996 | 18 MPG | 1996 Jaguar XJS Convertible |
| 1995 | 18 MPG | 1995 Jaguar XJS Convertible |
| 1994 | 18 MPG | 1994 Jaguar XJS Convertible |
| 1993 | 18 MPG | 1993 Jaguar XJS Convertible |
| 1992 | 13 MPG | 1992 Jaguar XJS Convertible |
| 1991 | 13 MPG | 1991 Jaguar XJS Convertible |
| 1990 | 13 MPG | 1990 Jaguar XJS Convertible |
| 1989 | 13 MPG | this page |
Compare against other Two Seaters for 1989
If you are cross-shopping the 1989 Jaguar XJS Convertible, the most useful comparison is against the other cars in the Two Seaters 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.
The Honda Civic CRX HF leads this group at 44 MPG, 31 MPG ahead of the 1989 Jaguar XJS Convertible.
Specifications
The 1989 Jaguar XJS Convertible runs a 5.3-liter 12-cylinder engine paired with a automatic 3-spd, sending power through rear-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
- Two Seaters
- Engine
- 5.3L 12-cylinder
- Transmission
- Automatic 3-spd
- Drivetrain
- Rear-Wheel Drive
- Fuel type
- Regular
- Annual petroleum use
- 22.9 barrels per year
- Gas guzzler tax
- Applies (federal)
Common questions about the 1989 Jaguar XJS Convertible
Quick answers to the questions people most often search for when looking up the 1989 Jaguar XJS Convertible.
-
Is the 1989 Jaguar XJS Convertible fuel efficient?
Not particularly. The 1989 Jaguar XJS Convertible returns 13 combined MPG, which trails the average car in the Two Seaters class for the same model year by about 29%. -
What MPG does the 1989 Jaguar XJS Convertible get?
The EPA rates the 1989 Jaguar XJS Convertible at 13 combined MPG, 11 MPG in city driving, and 15 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 1989 Jaguar XJS Convertible per year?
The EPA estimates an annual fuel cost of $4,600 for the 1989 Jaguar XJS Convertible. 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 1989 Jaguar XJS Convertible use?
The EPA lists the 1989 Jaguar XJS Convertible as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity. -
Has the Jaguar XJS Convertible become more fuel efficient over time?
Yes. The first EPA-rated Jaguar XJS Convertible, the 1989 Jaguar XJS Convertible, returned 13 combined MPG. The most recent 1996 Jaguar XJS Convertible returns 18 MPG, an improvement of 5 MPG over the run. -
How much CO₂ does the 1989 Jaguar XJS Convertible emit?
Tailpipe CO₂ emissions are 684 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 10,254 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 1989 Jaguar XJS Convertible?
City driving returns 11 MPG and highway driving returns 15 MPG, a gap of 4 MPG. The two figures are close enough that the car will hold its rated efficiency well across most driving patterns. -
What engine is in the 1989 Jaguar XJS Convertible?
The 1989 Jaguar XJS Convertible has a 5.3-liter 12-cylinder engine (EPA description: (GUZZLER) (FFS)). -
What transmission and drivetrain does the 1989 Jaguar XJS Convertible have?
The 1989 Jaguar XJS Convertible comes with a automatic 3-spd transmission and rear-wheel drive. -
How does the 1989 Jaguar XJS Convertible compare to the best car in its class?
The most efficient car in the Two Seaters class for the 1989 model year is the Honda Civic CRX HF at 44 combined MPG. The Jaguar XJS Convertible returns 13 MPG, a gap of 31 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.
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.