
The answer is very simple when you learn a few facts about the Scalextric Start range. Firstly, the track isn’t compatible with the Scalextric Sport range and has very little in the way of interesting track pieces. Secondly, the cars are generic amorphous blobs and not specific models of known existing cars. Finally the Scalextric Start guide blade of the cars is very weak and very prone to failure and, you’ve guessed it, unique to the Scalextric Start range of cars.
Scalextric Start is rubbish and is definitely not a start to collecting Scalextric. If anything it is an end to collecting Scalextric.
The Scalextric Start range is better off named the Scalextric End range.
An article by Scalextric Car Restorations