Taking these prices into account results in a pretty stark picture of just how much of a grind the PS4/PS5 titles are in terms of time taken to buy just one example of the most expensive vehicles in each game:
Gran Turismo 1 – 1 hour (8 races)
Gran Turismo 2 – 1.5 hours (14 races)
Gran Turismo 4 – 2.7 hours (32 races)
Gran Turismo 6 – 5.8 hours (90 races)
Gran Turismo 3 – 7.5 hours (5 races)
Gran Turismo Sport – 9.9 hours (84 races)
Gran Turismo 7 (v1.06) – 10.9 hours (205 races)
Gran Turismo 7 (v1.07) – 17.8 hours (333 races)
Gran Turismo 5 – 23.3 hours (315 races)