Why does Renault keep selling the Rs clio short....

The problem is, if they make the Clio much quicker, it will be stepping on the toes of the Meg. Then you have a small hot hatch and a slightly bigger hot hatch that are similar. People would stop buying the Meg if it is more expensive.

exactly.

Thats why Honda didnt bring the DC5 Integra Type R over, as it would of killed the sales of EP3 Civic Type R sales.