@CP, by “non plug in hybrid” I presume you mean a hybrid, aka full – hybrid? If so, I’d keep the order. I’ve read MANY stories of MHEV owners (such as myself) with this issue, but only 1 of a hybrid. I’m actually suspicious that the 1 story from an hybrid owner, was actually a MHEV (mild – hybrid) owner thinking that their MHEV was considered an hybrid.
If you have a MHEV on order, then it’s a tough choice. I paid £3,299 AP for my GTLS MHEV AWD and even though I’ve found the mpg to be awful and also suffered from the clogged PPF/GPF, the cheapest vehicle on the scheme that I would pick over my car is the plug-in Tuscon Ultimate and at £5,599 AP, it’s out of my price range.