Against 279 other V8 cars rated 2013–2015, the XK beats their 17.1 mpg average by 1.9 mpg, about $225 a year. Averaged over the years each was sold, the most economical engine since 2000, the 5L 8-cyl (2010–2015), does 19 mpg and the thirstiest, the 4L 8-cyl (2000–2002), 17: $238 a year apart.
Every Jaguar XK engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 5L 8-cyl | 16 / 24 | 2010–2015 | $2,021 | |
| 4.2L 8-cyl | 15 / 22.9 | 2003–2009 | $2,145 | |
| 4L 8-cyl | 15 / 21 | 2000–2002 | $2,259 |
What that actually costs
Against its rivals in the same model years, the Mini Cooper gets 30.4 mpg and the Mini Cooper Convertible 29.7 mpg, next to 19 mpg for the 2015 XK. The XK costs the most of them to run: $758 a year more than the Mini Cooper.
| Measure | Value |
|---|---|
| Cost per mile (2015) | $0.168 |
| Fuel per year | $2,021 |
| Fuel over five years | $10,105 |
| Against other V8 cars, 2013–2015 | −$225 a year |
| EPA's own estimate | $4,269 a year |
City or highway — who is this car for
The 2015 Jaguar XK 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 (2015) | 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 XK changed over the years
The XK peaked in 2015 at 19 mpg (16 city, 24 highway) and was at its thirstiest in 2006 at 17 — 2 mpg apart, or $238 a year in fuel between buying one year and the other.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2015 | 16 / 24 | 1 | $2,021 | |
| 2014 | 16 / 24 | 1 | $2,021 | |
| 2013 | 16 / 24 | 1 | $2,021 | |
| 2012 | 16 / 24 | 1 | $2,021 | |
| 2011 | 16 / 24 | 1 | $2,021 | |
| 2010 | 16 / 24 | 1 | $2,021 | |
| 2009 | 16 / 25 | 1 | $2,021 | |
| 2008 | 16 / 25 | 1 | $2,021 | |
| 2007 | 16 / 25 | 1 | $2,021 | |
| 2006 | 15 / 22 | 1 | $2,259 | |
| 2005 | 14 / 21 | 1 | $2,259 | |
| 2004 | 14 / 21 | 1 | $2,259 | |
| 2003 | 14 / 21 | 1 | $2,259 | |
| 2002 | 15 / 21 | 1 | $2,259 | |
| 2001 | 15 / 21 | 1 | $2,259 | |
| 2000 | 15 / 21 | 1 | $2,259 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 16 EPA ratings of the Jaguar XK — 3 engines across 2000–2015. 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 $4,269. Full method.
Frequently asked questions
What mpg does the 2015 Jaguar XK get?
19 mpg combined, 16 city and 24 highway, per EPA. Across every year since 2000 the XK has averaged 18.1 mpg.
Is the 2015 XK more efficient than the 2014?
About the same: 19 against 19 mpg combined.
Which XK year has the best gas mileage?
The 2015, at 19 mpg combined (16 city, 24 highway), which is also the latest model year we hold.
Does the XK get better gas mileage than the Mini Cooper?
No: 19 mpg for the 2015 XK against 30.4 for the 2016 Mini Cooper, about $758 a year more to run.
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