Fuel Economy / MPG » 6
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GREEN | 6 out of 10
2012 Jaguar XJ: 16/23 mpg (base); 15/21 mpg (supercharged); 15/22 mpg (long-wheelbase)
Fuel economy's mostly an afterthought for anyone shopping the 2012 Jaguar XJ. Still it's worth pointing out that the XJ doesn't get exceptional fuel economy even though it has a lightweight aluminum body structure.
Without any options for diesel or hybrid models, the XJ lineup is at its best in the base short-wheelbase version. The EPA rates it at 16/23 mpg. Adding supercharging to the 5.0-liter V-8 drops fuel economy to 15/21 mpg. Meanwhile, the long-wheelbase edition is rated by the EPA at 15/22 mpg.Jaguar's six-speed automatic transmission was state of the art just a couple of years ago, but now other luxury brands are adopting seven- and eight-speed automatics. We expect that kind of efficient upgrade will be coming in the XJ within a year or so.
The Jaguar XJ's gas mileage isn't exceptional, even when compared with heftier competitors.