Featured Threads

https://insideevs.com/news/715937/europe-may-ditch-wltp/

European commission has found that WLTP figures fall short by about 20% and much worse for PHEVs. Gasoline models were 23.7% less efficient and diesel models were slightly better at only 18.1% less efficient. For PHEVs the difference was not a percentage but about 3.5 times less efficient.

Table Average Real World and WLTP fuel consumption (some values were converted to mpg for audience understanding).

	Powertrain/fuel type	Average Fuel Consumption (l/100km:MPG) Real World	Average Fuel Consumption (L/100km:MPG) WLTP	Gap (%)
1	Petrol	7.89L/100km:29.8 mpg	6.38L/100km:36.9 mpg	23.7
2	Diesel	6.88L/100km:34.2mpg	5.82L/100km:40.4 mpg	18.1
3	Petrol + Diesel	7.44L/100km:31.6 mpg	6.13L/100km:38.4 mpg	21.2
4	Plug-in hybrid (petrol)	5.97L/100km:39.4 mpg	1.76L/100km:133.6 mpg	238
5	Plug-in hybrid (diesel)	5.83L/100km:40.3 mpg	1.41L/100km:166.8 mpg	312
6	Plug-in...

This morning I read about a caravan with it's own driving motor and own driving battery. This new type of caravan is being developed in Germany:
Presumably this would completely change the rating for the car since the towing vehicle is subjected to much reduced loads. The load on the towbar/hitch I imagine would still be an issue due to:

• control at higher speeds (sway, etc)
• increased load on towbar/hitch when the caravan also has brakes, also
• decreased (slightly?) load on towbar/hitch when the caravan is accelerating under its own power

Seems like a really great development when it finally hits the mass market.