After much searching and measuring, we chose the deluxe tarp. We have a 320d Touring and because the tarp fits in length to exactly pure. So starting from the back under the headrest to the trunk lock. The side walls go up to the windows high, thereby covering everything from Perfekto. There remains a lot to cover laterally but through something Fummelarbeit and folding it looks really great. The anklebbaren Kletverschlüsse keep the tarp super above and one has even this, if necessary, additionally tighten screws at the bottom.
For those who have a 140 long trunk (from the back to lock) the tarpaulin fits perfectly. 40cm High backseat + 40cm high sidewalls