Against 416 other V6 cars rated 2017–2019, the XJ trails their 21.7 mpg average by 2.2 mpg, about $199 a year. Averaged over the years each was sold, the most economical engine since 1984, the 3L 6-cyl (2013–2019), does 21 mpg and the thirstiest, the 4.2L 6-cyl (1984–1985), 15: $731 a year apart.
Every Jaguar XJ engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 3L 6-cyl | 18 / 27 | 2013–2019 | $1,829 | |
| 4.2L 8-cyl | 16 / 25 | 2004–2009 | $2,021 | |
| 5L 8-cyl | 15.4 / 23.1 | 2010–2019 | $2,087 | |
| 4L 8-cyl | 15 / 22 | 2002–2003 | $2,133 | |
| 4.2L 6-cyl | 14 / 17 | 1984–1985 | $2,560 |
What that actually costs
Against its rivals in the same model years, the Dodge Charger gets 21 mpg, the Chrysler 300 21 mpg and the Lincoln Continental 21 mpg, next to 19.5 mpg for the 2019 XJ. The XJ costs the most of them to run: $140 a year more than the Dodge Charger.
| Measure | Value |
|---|---|
| Cost per mile (2019) | $0.164 |
| Fuel per year | $1,969 |
| Fuel over five years | $9,845 |
| Against other V6 cars, 2017–2019 | +$199 a year |
| EPA's own estimate | $4,102 a year |
City or highway — who is this car for
The 2019 Jaguar XJ gives up 8.5 mpg in town: 25 on the highway against 16.5 in the city, $791 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2019) | 16.5 mpg | $2,327 a year if you only drive in town |
| Highway | 25 mpg | $1,536 a year if you mostly commute |
| Gap | +8.5 mpg (52%) | Wide — this car dislikes traffic |
How the XJ changed over the years
The XJ peaked in 2013 at 20 mpg (17 city, 25.5 highway) and was at its thirstiest in 1985 at 15 — 5 mpg apart, or $640 a year in fuel between buying one year and the other. The 2019 car does 19.5.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2019 | 16.5 / 25 | 2 | $1,969 | |
| 2018 | 16.5 / 25 | 2 | $1,969 | |
| 2017 | 16.5 / 25 | 2 | $1,969 | |
| 2016 | 16.5 / 25 | 2 | $1,969 | |
| 2015 | 16.5 / 25 | 2 | $1,969 | |
| 2014 | 16.5 / 25 | 2 | $1,969 | |
| 2013 | 17 / 25.5 | 2 | $1,920 | |
| 2012 | 16 / 23 | 1 | $2,021 | |
| 2011 | 16 / 23 | 1 | $2,021 | |
| 2010 | 16 / 23 | 1 | $2,021 | |
| 2009 | 16 / 25 | 1 | $2,021 | |
| 2008 | 16 / 25 | 1 | $2,021 | |
| 2007 | 16 / 25 | 1 | $2,021 | |
| 2006 | 16 / 25 | 1 | $2,021 | |
| 2005 | 16 / 25 | 1 | $2,021 | |
| 2004 | 16 / 25 | 1 | $2,021 | |
| 2003 | 15 / 22 | 1 | $2,133 | |
| 2002 | 15 / 22 | 1 | $2,133 | |
| 1985 | 14 / 17 | 1 | $2,560 | |
| 1984 | 14 / 17 | 1 | $2,560 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 27 EPA ratings of the Jaguar XJ — 5 engines across 1984–2019. 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 $4,102. Full method.
Frequently asked questions
What mpg does the 2019 Jaguar XJ get?
19.5 mpg combined, 16.5 city and 25 highway, per EPA; its 2 versions that year range from 18 to 21. Across every year since 1984 the XJ has averaged 18.9 mpg.
Is the 2019 XJ more efficient than the 2018?
About the same: 19.5 against 19.5 mpg combined.
Which XJ year has the best gas mileage?
The 2013, at 20 mpg combined (17 city, 25.5 highway).
Does the XJ get better gas mileage than the Dodge Charger?
No: 19.5 mpg for the 2019 XJ against 21 for the 2020 Dodge Charger, about $140 a year more to run.
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