Originally Posted by MR X 93
So the full garage achievement takes roughly 3.2 million coins, so what's the quickest way to get this? 300 HP final grand prix? Or anything else?
For however much money you got from completed the 100 200 and 300 hp, it should take you about 15-18 races of the 300 hp grand prix to reach that. Each should take 10-15 mins a prix so roughly 4 or so hours. This is the hardest achieve in the game and will be the last one to get.