Hi Jamie,
Tbh,all new cars today are very reliable,I know you get some bad ones but that is the same for any consumer goods.All new cars come with a very good anti corrosion warranty.
The only downside with Renault's is they don't hold their value very good.Saying that most cars don't unless you are moving up into the BMW/Mercedes/Audi type market.
If your dad likes what he see's and is impressed with the test drive......go for it.IMO.