Gallonly
2005 Jaguar XK8 Convertible (X100)
Shown: 2005 Jaguar XK8 Convertible (X100). Photo: MercurySable99, CC BY-SA 4.0, via Wikimedia Commons
  • Newest year: 2005
  • Gas
  • Small cars
  • Same as 2004

2000-2005 Jaguar XK8 MPG & Fuel Cost

6 model years · 18–19 MPG combined

19 MPG
Combined
16 MPG
City
24 MPG
Highway
Annual fuel cost · Convertible 4.2L 8-cyl RWD
$4,230

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

Cheaper to fuel than 2 of 10 small car configurations, MY2005. Ranked against all rated configurations, not sales-weighted.

Next generation: 2006

2000-2005 Jaguar XK8 at a glance

The 2000-2005 Jaguar XK8 covers 6 model years in the EPA database (12 configurations in all), rated 18–19 MPG combined. The newest model year, 2005, costs about $4,230 a year to fuel for its most efficient version, the Convertible 4.2L 8-cyl RWD (19 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2001 and 2003; 2002, 2004 and 2005 repeat the values of the year before. The best combined rating in the generation, 19 MPG, was reached in 2003, 2004 and 2005.

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

2000-2005 Jaguar XK8 by model year

2000-2005 Jaguar XK8: EPA combined rating and yearly fuel cost for each model year
Model yearPowertrainsCombined$/yrEPA ratings
2005 Gas 19 MPG $4,230 Same EPA ratings as 2004
2004 Gas 19 MPG $4,230 Same EPA ratings as 2003
2003 Gas 19 MPG $4,230 Ratings changed
2002 Gas 18 MPG $4,460 Same EPA ratings as 2001
2001 Gas 18 MPG $4,460 Ratings changed
2000 Gas 18 MPG $4,460 First year

What the 2005 Convertible 4.2L 8-cyl RWD costs to drive

Per month

$353

$4,230 a year ÷ 12

Per 25 miles

$7.05

Per 100 miles

$28.20

Five years

$21,150

5 × the yearly cost, prices held at today's level

vs the small car median

$580more a year

Class median $3,650 a year, MY2005

Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).

2005 Jaguar XK8 MPG

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

EPA lists the same ratings for the 2005 Jaguar XK8 as for the 2004 model, so the configurations and costs are the ones in the 2004 section above.See 2004

Gas · 4.2L
Combined
19 MPG
Per year
$4,230

Gas configurations (2)

2005 Jaguar XK8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Convertible (Most efficient) 4.2L 8-cyl RWD 16 24 19 $4,230
XK8 4.2L 8-cyl RWD 16 24 19 $4,230

2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2004 Jaguar XK8 MPG

Same EPA ratings as 2003

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

EPA lists the same ratings for the 2004 Jaguar XK8 as for the 2003 model, so the configurations and costs are the ones in the 2003 section above.See 2003

2003 Jaguar XK8 MPG

19 MPG · $4,230/yr

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

Versus 2002: The most efficient configuration moves from 18 to 19 MPG, up 1. Its annual cost goes from $4,460 to $4,230, $230 less.

Gas · 4.2L
Combined
19 MPG
Per year
$4,230

Gas configurations (2)

2003 Jaguar XK8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Convertible (Most efficient) 4.2L 8-cyl RWD 16 24 19 $4,230
XK8 4.2L 8-cyl RWD 16 24 19 $4,230

2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2002 Jaguar XK8 MPG

Same EPA ratings as 2001

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

EPA lists the same ratings for the 2002 Jaguar XK8 as for the 2001 model, so the configurations and costs are the ones in the 2001 section above.See 2001

2001 Jaguar XK8 MPG

18 MPG · $4,460/yr

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

Versus 2000: The most efficient configuration stays at 18 MPG. Its annual cost stays at $4,460.

Gas · 4.0L
Combined
18 MPG
Per year
$4,460

Gas configurations (2)

2001 Jaguar XK8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Convertible (Most efficient) 4.0L 8-cyl RWD 15 22 18 $4,460
XK8 4.0L 8-cyl RWD 15 22 18 $4,460

2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2000 Jaguar XK8 MPG

18 MPG · $4,460/yr

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

Gas · 4.0L
Combined
18 MPG
Per year
$4,460

Gas configurations (2)

2000 Jaguar XK8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Convertible (Most efficient) 4.0L 8-cyl RWD 15 22 18 $4,460
XK8 4.0L 8-cyl RWD 16 23 18 $4,460

2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Fuel cost by state

Yearly cost of the Convertible 4.2L 8-cyl RWD: $5,040 in California and $3,670 in Texas, a $1,370 difference.

Gasoline prices: California: California state average; Washington: Washington state average; New York: New York state average; Florida: Florida state average; Texas: Texas state average (Sep 2026).
Fuel cost in every state

Similar cars

Closest combined MPG among MY2005 small car models.

EPA ratings: fueleconomy.gov file of Sep 29, 2026 · Prices: EIA regular gasoline, U.S. average, Sep 2026 ($4.36/gal) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Generations

Frequently asked questions

What gas mileage does the 2000-2005 Jaguar XK8 get?

EPA rates the 2000-2005 Jaguar XK8 at 18–19 MPG combined across 12 configurations and 6 model years. The most efficient version, the 2005 Convertible 4.2L 8-cyl RWD, is rated 19 MPG (16 city, 24 highway).

Which years had the best MPG in the 2000-2005 Jaguar XK8?

The Convertible 4.2L 8-cyl RWD reached the generation's best combined rating, 19 MPG, in 2003, 2004 and 2005. The lowest top rating, 18 MPG, was in 2000, 2001 and 2002.

Did EPA ratings change during the 2000-2005 Jaguar XK8?

Yes. Ratings changed in 2001 and 2003. In 2002, 2004 and 2005 the values repeat the year before.

How much does it cost to fuel a 2005 Jaguar XK8 per year?

Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the Convertible 4.2L 8-cyl RWD costs about $4,230 a year. Across all 2 configurations the cost runs $4,230 a year.

How much does it cost to drive a 2005 Jaguar XK8 100 miles?

About $28.20 per 100 miles for the Convertible 4.2L 8-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026). That is the annual cost over 15,000 miles divided by 150.

Is the 2005 Jaguar XK8 more efficient in the city or on the highway?

The Convertible 4.2L 8-cyl RWD is rated 16 city and 24 highway MPG, so it is more efficient on the highway, by 8 MPG.

How does the 2005 Jaguar XK8 compare with other small car configurations?

The Convertible 4.2L 8-cyl RWD costs about $4,230 a year to fuel, $580 more than the class median of $3,650, and less than 2 of 10 small car configurations. The comparison covers all 370 rated small car configurations for MY2005, not weighted by sales.

Is the 2005 Jaguar XK8 different from the 2004 model?

No. EPA lists the same ratings for 2004 and 2005: 2 configurations rated 19 MPG combined. See the 2004 Jaguar XK8 for that year.