What is the best Jaguar XJ8 4.2 Litre for fuel economy?

The strongest year was 2004 at 19 mpg combined, against 19 mpg in 2004. That is a 0 mpg spread across the nameplate's history.

How much does a Jaguar XJ8 4.2 Litre cost to fuel each year?

At 11,500 miles a year the 2005 model uses between 605 and 605 gallons, or $2,118 to $2,118 at $3.50 a gallon.

What does the Jaguar XJ8 4.2 Litre emit?

EPA reports 467.7368421052632 to 467.7368421052632 grams of tailpipe CO2 per mile for the 2005 model year, or about 5.4 to 5.4 tons over a year of driving.

Jaguar XJ8 4.2 Litre MPG by year — every rating on record

The Jaguar XJ8 4.2 Litre has a combined EPA fuel economy rating for 2 model years, from 2004 to 2005. Across those years its best rated version returned 19 mpg (2004) and its thirstiest returned 19 mpg (2004). The EPA record holds 2 configurations for this nameplate, most recently a Large Cars.

19best combined mpg (2004)

19worst combined mpg (2004)

19latest year best (2005)

2configurations on record

Year-by-year EPA ratings

Model year	Configurations	Best combined	Worst combined	Class rank that year	Drivetrains	Fuel	EPA class
2004	1	19 mpg	19 mpg	#15 of 41 (65th pct)	Rear-Wheel Drive	Premium	Large Cars
2005	1	19 mpg	19 mpg	#16 of 42 (63th pct)	Rear-Wheel Drive	Premium	Large Cars

Where it has stood in its class

Ranked against every other nameplate the EPA filed under the same class that year. The Jaguar XJ8 4.2 Litre placed highest in 2004 at #15 of 41, and lowest in 2005 at #16 of 42. It spent 2 of its 2 ranked years in the top half of its class.

Every configuration on record

All 2 configurations EPA lists for this nameplate, newest first.

Year	Configuration	Engine detail	City	Highway	Combined	Gallons/yr	Barrels/yr	EPA fuel cost/yr	CO2 g/mi	GHG
2005	4.2L 8-cyl Rear-Wheel Drive Automatic 6-spd Premium	4.2L 8-cyl	16	25	19	605.3	15.7	$4,100	467.7368421052632	n/a
2004	4.2L 8-cyl Rear-Wheel Drive Automatic 6-spd Premium	4.2L 8-cyl	16	25	19	605.3	15.7	$4,100	467.7368421052632	n/a

What XJ8 4.2 Litre fuel costs over a year

At the EPA's 11,500 miles a year, the 2005 Jaguar XJ8 4.2 Litre burns 605 to 605 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.

Pump price	Most efficient	Thirstiest	Spread
$3.00/gal	$1,816	$1,816	$0
$3.50/gal	$2,118	$2,118	$0
$4.00/gal	$2,421	$2,421	$0

EPA’s own estimate for the 2005 model year is $4,100 to $4,100 a year in fuel, or $9,250 more than the average new vehicle over five years.

How it compares with other Large Cars

Across the 305 nameplates EPA classifies as Large Cars, the median best combined rating is 21 mpg. At 19 mpg the Jaguar XJ8 4.2 Litre is 2 mpg below the median, which is worth about $202 a year at $3.50 a gallon.

All Large Cars rankings — every nameplate in the class, best to worst.

Other Jaguar nameplates

Every Jaguar model compared → — all nameplates ranked by best combined rating, with what each one costs a year.