Daimler Sovereign (XJ6): Which Version Should You Buy?
The Daimler Sovereign (XJ6) choice comes down to two distinct propositions. The 1969–1993 sedan offers several naturally aspirated Gasoline engines, Manual or Automatic transmissions, and outputs from 149 hp to 186 hp among the listed specifications.
The Daimler Sovereign (XJ6) choice comes down to two distinct propositions. The 1969–1993 sedan offers several naturally aspirated Gasoline engines, Manual or Automatic transmissions, and outputs from 149 hp to 186 hp among the listed specifications. The 1994–1997 4.0 AT is the clear performance choice: it produces 237 hp and 375 Nm, reaches 100 km/h in 8.1 seconds, and has a top speed of 232 km/h. The 1997–2003 restyled 4.0 AT retains Automatic transmission, RWD, Gasoline fuel type, and 95 fuel, but most of its numerical specifications are not measured. Buyers prioritizing documented performance should therefore start with the 1994–1997 4.0 AT, while those wanting an earlier Manual car should compare the 3.4 MT and the various 4.2 MT versions carefully.
Daimler Sovereign (XJ6) generations compared
The catalogue contains three generation records, all with a Sedan body. The first generation covers 1969–1993 and contains 21 versions, of which 12 are detailed here. Its listed engines span 2,792–4,235 cm³, while transmission choices include Manual and Automatic. Every detailed first-generation version is RWD.
The third generation covers 1994–1997 and has one version, the 4.0 AT. It combines a 3,980 cm³ Gasoline engine with Automatic transmission and RWD. Compared with the most powerful detailed first-generation car, the 186 hp 4.2 MT or 4.2 AT, it adds 51 hp. Its 375 Nm output is also 69 Nm above the 306 Nm reported for several 4.2 versions.
The third-generation restyling covers 1997–2003 and remains a Sedan with one 4.0 AT version. The available data identifies Gasoline, Automatic, RWD, and 95 fuel, but power, torque, displacement, acceleration, maximum speed, consumption, weights, clearance, tank capacity, and wheel sizes are not measured. It should be treated as part of the third-generation buying decision, not as a separate generation.
Daimler Sovereign (XJ6) engine and transmission specs
Repeated version names are distinguished by output or displacement below.
| Generation and version | Power | Torque | Displacement | Fuel | Cylinders/layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|
| 1969–1993 2.8 MT | 149 hp | not measured | 2,792 cm³ | Gasoline | 6, Inline | No | Manual, 4-speed | RWD |
| 1969–1993 2.8 AT | 149 hp | not measured | 2,792 cm³ | Gasoline | 6, Inline | No | Automatic, 3-speed | RWD |
| 1969–1993 3.4 MT | 163 hp | 250 Nm | 3,442 cm³ | Gasoline | 6, Inline | No | Manual, 5-speed | RWD |
| 1969–1993 3.4 AT | 163 hp | 250 Nm | 3,442 cm³ | Gasoline | 6, Inline | No | Automatic, 3-speed | RWD |
| 1969–1993 4.2 AT, 167 hp | 167 hp | not measured | 4,200 cm³ | Gasoline | 6, Inline | No | Automatic, 3-speed | RWD |
| 1969–1993 4.2 MT, 169 hp | 169 hp | 306 Nm | 4,235 cm³ | Gasoline | 6, Inline | No | Manual, 4-speed | RWD |
| 1969–1993 4.2 AT, 169 hp | 169 hp | 306 Nm | 4,235 cm³ | Gasoline | 6, Inline | No | Automatic, 3-speed | RWD |
| 1969–1993 4.2 MT, 173 hp | 173 hp | 306 Nm | 4,235 cm³ | Gasoline | 6, Inline | No | Manual, 4-speed | RWD |
| 1969–1993 4.2 AT, 173 hp | 173 hp | 306 Nm | 4,235 cm³ | Gasoline | 6, Inline | No | Automatic, 3-speed | RWD |
| 1969–1993 4.2 AT, 178 hp | 178 hp | 297 Nm | 4,235 cm³ | Gasoline | 6, Inline | No | Automatic, 3-speed | RWD |
| 1969–1993 4.2 MT, 186 hp | 186 hp | not measured | 4,235 cm³ | Gasoline | 6, Inline | No | Manual, 4-speed | RWD |
| 1969–1993 4.2 AT, 186 hp | 186 hp | not measured | 4,235 cm³ | Gasoline | 6, Inline | No | Automatic, 3-speed | RWD |
| 1994–1997 4.0 AT | 237 hp | 375 Nm | 3,980 cm³ | Gasoline | 6, Inline | not measured | Automatic; gears not measured | RWD |
| 1997–2003 4.0 AT | not measured | not measured | not measured | Gasoline | not measured | not measured | Automatic; gears not measured | RWD |
Power per litre helps separate engines that otherwise look similar. The 2.8 MT and 2.8 AT each deliver about 53.4 hp per litre. The 3.4 MT and 3.4 AT produce about 47.4 hp per litre. The 4.2 versions range from about 39.8 hp per litre for the 167 hp 4.2 AT to about 43.9 hp per litre for the 186 hp cars. The 1994–1997 4.0 AT reaches about 59.5 hp per litre, the strongest figure among the listed versions.
Performance, fuel economy and mpg data
Only three detailed versions have measured acceleration and top-speed figures. The 1969–1993 3.4 MT reaches 100 km/h in 10.9 seconds and has a maximum speed of 188 km/h. The 1969–1993 4.2 MT with 169 hp reduces the sprint to 8.9 seconds and raises maximum speed to 201 km/h. It is therefore 2.0 seconds quicker to 100 km/h and 13 km/h faster than the 3.4 MT.
The 1994–1997 4.0 AT reaches 100 km/h in 8.1 seconds and 232 km/h. It is 0.8 seconds quicker to 100 km/h and 31 km/h faster than the measured 169 hp 4.2 MT. Acceleration and top speed are not measured for every other listed version, including both 2.8 cars, the 3.4 AT, the remaining 4.2 cars, and the restyled 1997–2003 4.0 AT.
Fuel consumption is measured only for the 1994–1997 4.0 AT: 16.8 l/100 km in the city, 10.1 l/100 km on the highway, and 12.6 l/100 km combined. Consumption is not measured for all first-generation versions and for the restyled 4.0 AT. MPG figures are also not measured in the supplied data.
Dimensions, weight, clearance and wheels
The 2.8 MT has a kerb weight of 1,620 kg and 132 mm of ground clearance. With 149 hp, it carries about 10.9 kg per horsepower. Its gross weight, tank capacity, and wheel sizes are not measured.
The 3.4 MT weighs 1,727 kg and has 132 mm of clearance. Its weight-to-power ratio is about 10.6 kg per horsepower. Compared with the 2.8 MT, it is 107 kg heavier but gains 14 hp and 250 Nm of measured torque.
The measured 169 hp 4.2 MT weighs 1,677 kg, has 132 mm of clearance, and carries about 9.9 kg per horsepower. It is 50 kg lighter than the 3.4 MT while offering 6 hp and 56 Nm more. The 173 hp 4.2 MT weighs 1,700 kg, giving it about 9.8 kg per horsepower. Gross weight, tank capacity, and wheel sizes are not measured for these first-generation cars.
The 1994–1997 4.0 AT has a kerb weight of 1,800 kg, a gross weight of 2,220 kg, 116 mm of clearance, and an 81-litre tank. Its listed wheel sizes are 225/60 R16 and 235/50 R17. At about 7.6 kg per horsepower, it has the best measured weight-to-power result here. It is 123 kg heavier than the measured 169 hp 4.2 MT, but has 68 hp more and 69 Nm more torque. Its clearance is 16 mm lower.
Weights, clearance, tank capacity, and wheel sizes are not measured for the 1997–2003 4.0 AT.
Which Daimler Sovereign (XJ6) version should you buy?
Choose the 1994–1997 4.0 AT if measured performance is the priority. Its 237 hp, 375 Nm, 8.1-second acceleration figure, and 232 km/h maximum speed make it the strongest documented option. It also provides the fullest economy and dimensions record, although its 16.8 l/100 km city consumption and 12.6 l/100 km combined consumption should be part of the decision.
Choose the 169 hp 4.2 MT if you want the strongest evidence-backed first-generation performance package. It reaches 100 km/h in 8.9 seconds, runs to 201 km/h, produces 306 Nm, and weighs 1,677 kg. Among early cars with measured acceleration, it decisively outperforms the 3.4 MT.
Choose the 3.4 MT if a smaller-displacement Manual version is preferable and complete comparative figures matter. It offers 163 hp, 250 Nm, a 5-speed Manual gearbox, 10.9-second acceleration, and a 188 km/h maximum speed. The 3.4 AT retains the same 163 hp and 250 Nm but uses a 3-speed Automatic; its acceleration and maximum speed are not measured.
The 2.8 MT and 2.8 AT are the lowest-output choices at 149 hp. The Manual has 4 speeds, while the Automatic has 3. Their torque and performance figures are not measured, so the data cannot support a claim that either is quicker.
Within the repeated 4.2 names, power matters more than the badge alone. The 4.2 AT appears with 167 hp, 169 hp, 173 hp, 178 hp, and 186 hp. The 4.2 MT appears with 169 hp, 173 hp, and 186 hp. The spread between the least and most powerful listed 4.2 versions is 19 hp. Torque does not rise in the same order: the 169 hp and 173 hp versions provide 306 Nm, while the 178 hp 4.2 AT provides 297 Nm, or 9 Nm less.
The 1997–2003 4.0 AT is the least suitable choice for a specification-led comparison because nearly all numerical fields are not measured. It may still belong on a buyer’s shortlist, but the supplied data supports only its Sedan body, production period, Gasoline fuel type, 95 fuel, Automatic transmission, and RWD layout. Price, availability, problems, and reliability are not measured for any version, so they cannot determine the recommendation here.