Comparison: Megane Coupe III Tce 180 with Megane RS 250. Maintenance costs, consumption, maintenance.

Hello dear motor talk community. This is my first post. Have the following question: I am in the decision phase whether to buy a Megane Tce 180 or better equal to a Megane RS 250. According to my bill, the cost difference between both vehicles, with a driving performance of 15,000 km is about 600-700 euros for petrol, tax and insurance (have a relatively good SF class in the insurance), since I have been driving accident-free for 22 years. only the Tce 130 (this, however, is not in question for me) and the Tce 190. (should be a swallowing woodpecker) Before I really venture to the RS, (search factor) I ask around a bit, what experiences you have, especially with regard to the running costs. Would you buy the RS again, or, despite all the driving pleasure, decide against an RS? Rejoice me about your answers Greeting