Your Renault's shock absorbers are assisted by the coil springs. Coil springs are therefore fixed both at the front and at the rear of the vehicle. The front springs are often supported by the suspension or macpherson struts. At the rear of a vehicle suspension struts are a lot less common though as the front of a car is a lot heavier than the rear (due to the weight of the engine).
As opposed to shock absorbers, the coil springs can be replaced at only one side of your Renault. To determine which coil springs are suitable for the model of your car, please select your vehicle into the search engine.