The Mercedes-Benz R 320 CDI 4Matic with a Elddis Avante 646 with an actual weight of 1698 kg is in general a good match and suitable for all journeys on all kinds of roads.
The motor preformance of the Mercedes-Benz is in general very good. And also the weight of the Elddis with a normally distributed User Payload (200 kg in the caravan and 200 kg in the car including passengers), is good.
Flat roads
Towing Performance
275
348
Mountains
Risk of snaking
327
173
Weight ratio: 69% (75% of kerbweight)
1698 kg
2450 kg
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Mercedes-Benz R 320 CDI 4Matic Elddis Avante 646
Actual Weights
Elddis Avante 646: 1698 kg.
Mercedes-Benz R 320 CDI 4Matic: 2450 kg.
Noseweight: 90 kg.
Actual weight ratio: 69%.
Performance
The engine's performance is generally very good on flat roads (performance score to compare 275 points).
Speeds of 84 mph (135 km/h) to 89 mph (143 km/h) are often quite possible.
There is a lot of power at low engine speeds (score to compare 348 points).
Higher revs (1600 rpm) are usually not necessary on flat roads, under most circumstances.
Acceleration from 0-62 mph (0-100 km/h) is theoretically possible in 15 sec.
In the mountains the performance is generally very good (score to compare 327 points).
No problems are to be expected on steep mountain roads. Hill starts are possible on steep slopes up to 24%.
On motorway inclines hardly any higher revs are needed.
A speed of 74 mph (119 km/h) is usually possible on most motorway inclines.
Weight
The towing limit of the Mercedes-Benz is more than sufficient (check this in your vehicle documents).
If you passed your driving test after 1 January 1997, you will need a B+E driving license.
Weight ratio between the laden caravan and the loaded car is 69%. Common in the UK: the weight ratio between the laden caravan and the kerbweight of the car is 75%.
There is a small chance of snaking at higher speeds, strong side winds and thoughtless driving. Even if the combination normally feels stable, the forces by deflection side to side are great at high speed. For drivers with knowledge of, and experience in driving a caravan it is safe to drive, but proper and careful loading is still important! An electronic stability system in the car and / or on the caravan is worth considering.
Recommended noseweight is 90 kg.
Safe speed up to 62 mph (100 km/h).
Stability and safety score to compare is 173 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 very good.
If the caravan is well loaded 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.