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|2006||2006 4dr Sedan, ext. supercharged 390hp 4.2L V8 6-sp automatic RWD||19.57||
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|With the supercharged 510hp 5.0L V8 engine, 8-speed shiftable automatic transmission, and rear-wheel drive, the 2006 Jaguar XJ has been averaging 19.57 MPG (miles per gallon).
The 2006 Jaguar XJs in this analysis were driven mostly on the highway at an average speed of 67 miles per hour (about 61.7 percent of the miles driven). The rest of the miles were in the city (20 percent), in heavy traffic (5 percent), and in the suburbs (0 percent).
In addition, the average 2006 Jaguar XJ in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.