The Opel Vectra 2.2 Dti with a Sterling Europa 390 with an actual weight of 1193 kg is in general a good match and suitable for all journeys on all kinds of roads.
The motor preformance of the Opel is in general fairly good. And also the weight of the Sterling with a User Payload (186 kg in the caravan and 200 kg in the car including passengers), is very good.
Flat roads
Towing Performance
214
188
Mountains
Risk of snaking
232
197
Weight ratio: 67% (75% of kerbweight)
1193 kg
1789 kg
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Opel Vectra 2.2 Dti Sterling Europa 390
Actual Weights
Sterling Europa 390: 1193 kg.
Opel Vectra 2.2 Dti: 1789 kg.
Noseweight: 70 kg.
Actual weight ratio: 67%.
Performance
The engine's performance is generally good on flat roads (performance score to compare 214 points).
Speeds of 71 mph (115 km/h) to 77 mph (124 km/h) are often quite possible.
There is sufficient power at low engine speeds (score to compare 188 points).
Slightly higher revs (1800 rpm) may be necessary under normal conditions on flat roads.
Acceleration from 0-62 mph (0-100 km/h) is theoretically possible in 19.6 sec.
In the mountains the performance is generally good (score to compare 232 points).
No problems are to be expected on steep mountain roads. Hill starts are possible on steep slopes up to 16%.
On motorway inclines higher revs (3000 rpm) are needed.
A speed of 62 mph (100 km/h) is usually possible on most motorway inclines.
Weight
The towing limit of the Opel is more than sufficient (check this in your vehicle documents).
The car is too heavily loaded.
Weight ratio between the laden caravan and the loaded car is 67%. Common in the UK: the weight ratio between the laden caravan and the kerbweight of the car is 75%.
The chance of snaking is small even at higher speeds.
Recommended noseweight is 70 kg.
Stability and safety score to compare is 197 points.
If the caravan starts to snake you should reduce your speed and slow down directly! Lift your feet off the accelerator and brake gradually. Hold the steering wheel into a fixed position.
Conclusion
Performance is fairly good.
Safe driving is possible.
It's a perfect match!
Influence of User Payload on stability
Weight distribution and noseweight are vital in obtaining a stable caravan.