We have spent some considerable time evaluating the Clio's and the variants, 172, 172 cup, trophy, 182, sport, trophy, 182 cup all of which have variations that affect performance and comfort. We could of chosen the 172, but then there are so many 'improvements' up to the 182 cup that could be shall we say quietly added [cheating] that would totally compramise policing and the future championship, ending up the same way as current Class A stock hatch, loads of money with mix and match.We have used a Renault specialist to go through the model types components, plus seeked tuning specialists knowledge of the add ons and common upgrades to determine the 182 cup choice, its not been a guess.
So chose the top best performance Clio, its also the most up to date and has the clean CB22 model type with no variations across its build period. Nothing on a 172 etc will improve its performance and there plenty about at a reasonable cost [£1000-3000], this includes factory built and dealer option upgrades, hence variances in colours.
The 172 is not the same car as a 182 cup, there are some major differences as follows:
Rear body/chassis-172 has a spare wheel well, the 182 cup does not have this.
182 cup has twin exhaust at the rear, 172 does not.
182 cup has a different rear beam axle to the 172.
182 cup has different exhaust and inlet manifolds to 172.
182 cup has a different cylinder head to the 172.
182 cup has different front hub carriers, driveshafts, lower wishbone than the 172.
The gearbox ratios are different.
The wheels are different.
The air filter housing differs.
Front splitters and rear boot wing differ.
The list goes on in other areas not associated with racing.
Its not as simple as 10bhp and ABS, the cars are totally different.
The 172 does have changes in parts over its life/build period, cylinder head being one, plus big changes in panels when going to a 172 cup, a minefield to right rules for.
So its not simple to right regulations to cover so much variance across car types and build periods [as seen with the saxo for example] and police it all in a 1-3 hour slot on a Sunday.
I do hope this does clearly explain why we at the begining have decided upon the 182 cup and not any other car type or variant.
Do note I also have a 172 sport, but must agree that the 182 cup is the only choice at present.
regards
Bill Gregory.