Real MPG: Jaguar XJ (2010 - 2019) 3.0d LWB
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                                40.4
                            
                            Official MPG(NEDC)
32.0–50.4                            
                            Real MPG
                        
                                41.9
                            
                            Real MPGAverage
                                    104%
                                
                                of Official MPG(NEDC)
More engines available for this model:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| 3.0 | 31.0 mpg | - | 40.5 mpg | 131% | |
| 3.0 Supercharged | 29.4–31.0 mpg | - | 27.4 mpg | 91% | |
| 3.0 Supercharged LWB | 29.4–31.0 mpg | - | 31.8 mpg | 105% | |
| 3.0d | 40.4–46.3 mpg | - | 39.7 mpg | 92% | |
| 5.0 V8 | 24.9 mpg | - | 28.6 mpg | 115% | |
| 5.0 V8 LWB | 24.9 mpg | - | - | - | |
| 5.0 V8 Supercharged | 23.4–25.5 mpg | - | 21.6 mpg | 88% | |
| 5.0 V8 Supercharged LWB | 23.4–25.5 mpg | - | 23.5 mpg | 96% | |
| 5.0 V8 Supercharged XJR | 24.4–25.5 mpg | - | 31.1 mpg | 125% | 
Read the Honest John review...
Jaguar XJ (2010 - 2019)
                More engaging to drive than German rivals. Characterful. Diesel is very strong. Excellent overall refinement.
            
        Rivals
| Jaguar XJ (2010 - 2019) | 37.1 | avg mpg | 
| Audi A7 Sportback (2011 - 2018) | 37.4 | avg mpg | 
| Audi A8 (2010 - 2017) | 35.6 | avg mpg | 
| BMW 7 Series (2009 - 2016) | 34.5 | avg mpg | 

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