Against 335 other V8 cars rated 2004–2006, the XK8 beats their 15.6 mpg average by 3.4 mpg, about $441 a year. Averaged over the years each was sold, the most economical engine since 1998, the 4.2L 8-cyl (2003–2006), does 19 mpg and the thirstiest, the 4L 8-cyl (1998–2002), 18: $112 a year apart.
Every Jaguar XK8 engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 4.2L 8-cyl | 16 / 24 | 2003–2006 | $2,021 | |
| 4L 8-cyl | 15.4 / 22.6 | 1998–2002 | $2,133 |
What that actually costs
Against its rivals in the same model years, the Honda Civic gets 36.3 mpg, the Nissan Sentra 27.3 mpg and the Volkswagen Beetle 28.8 mpg, next to 19 mpg for the 2006 XK8. The XK8 costs the most of them to run: $963 a year more than the Honda Civic.
| Measure | Value |
|---|---|
| Cost per mile (2006) | $0.168 |
| Fuel per year | $2,021 |
| Fuel over five years | $10,105 |
| Against other V8 cars, 2004–2006 | −$441 a year |
| EPA's own estimate | $4,189 a year |
City or highway — who is this car for
The 2006 Jaguar XK8 gives up 8 mpg in town: 24 on the highway against 16 in the city, $800 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2006) | 16 mpg | $2,400 a year if you only drive in town |
| Highway | 24 mpg | $1,600 a year if you mostly commute |
| Gap | +8 mpg (50%) | Wide — this car dislikes traffic |
How the XK8 changed over the years
The XK8 peaked in 2006 at 19 mpg (16 city, 24 highway) and was at its thirstiest in 2002 at 18 — 1 mpg apart, or $112 a year in fuel between buying one year and the other.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2006 | 16 / 24 | 1 | $2,021 | |
| 2005 | 16 / 24 | 1 | $2,021 | |
| 2004 | 16 / 24 | 1 | $2,021 | |
| 2003 | 16 / 24 | 1 | $2,021 | |
| 2002 | 15 / 22 | 1 | $2,133 | |
| 2001 | 15 / 22 | 1 | $2,133 | |
| 2000 | 16 / 23 | 1 | $2,133 | |
| 1999 | 15 / 23 | 1 | $2,133 | |
| 1998 | 16 / 23 | 1 | $2,133 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 9 EPA ratings of the Jaguar XK8 — 2 engines across 1998–2006. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $4,189. Full method.
Frequently asked questions
What mpg does the 2006 Jaguar XK8 get?
19 mpg combined, 16 city and 24 highway, per EPA. Across every year since 1998 the XK8 has averaged 18.4 mpg.
Is the 2006 XK8 more efficient than the 2005?
About the same: 19 against 19 mpg combined.
Which XK8 year has the best gas mileage?
The 2006, at 19 mpg combined (16 city, 24 highway), which is also the latest model year we hold.
Does the XK8 get better gas mileage than the Honda Civic?
No: 19 mpg for the 2006 XK8 against 36.3 for the 2007 Honda Civic, about $963 a year more to run.
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