MONEYWEB app instead? Will definitely cause downward pressure on manufacturer parts pricing, says Nada. 00:01 A warranty may be affected if damages to a vehicle result from work done by an independent provider or the fitment of non-original parts. Image: Moneyweb Consumers face a number of risks if they take their in-warranty vehicle with a service plan to a non-franchised dealership for service or maintenance, the National Automobile Dealersâ Association (Nada) has warned. However, Nada chair Mark Dommisse has also highlighted a number of positive elements in the final Guidelines for Competition in the South African Automotive Aftermarket, which were published by the Competition Commission in December 2020 and will be implemented from July 1 this year.