111.9kW/t
Half of every XJ on the road is below this. Power divided by mass in running order — the one figure that compares across model and era.
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There are 2,959 of them on Dutch roads, built between 1970 and 2020, weighing anywhere from 1,608 to 2,010 kg. They share a name and not much else. Here is the spread.
Half of every XJ on the road is below this. Power divided by mass in running order — the one figure that compares across model and era.
A typical XJ has more power per tonne than 97% of the 8,248,168 combustion cars in the Netherlands.
For the median version, from power, mass and body shape. A prediction, not a measurement.
The slowest in this sample makes 72.8 kW per tonne and the quickest 193.4 — a factor of 2.7 between two cars wearing the same badge. Any single number for a XJ is an average over that.
| Engine | Share of the sample | kW per tonne |
|---|---|---|
| 219 kW 298 hp | 13% | 112.9 |
| 190 kW 258 hp | 12% | 97.9 |
| 202 kW 275 hp | 12% | 104.1 |
| 175 kW 238 hp | 9% | 90.2 |
| 291 kW 396 hp | 9% | 150.0 |
| 217 kW 295 hp | 8% | 111.9 |
| 174 kW 237 hp | 6% | 89.7 |
| 221 kW 300 hp | 6% | 113.9 |
Of 300 sampled: 230 petrol, 47 diesel, 22 petrol + LPG, 1 LPG.
Asking the server…
Everything above describes 2,959 cars sharing a name, spanning 1970 to 2020 and 1,608–2,010 kg. Your XJ has one engine, one mass and one registration. Put the plate in and the answer is about that car rather than about the name on it.