I love the GTA IV mission complete sounds. The sounds feel so rewarding every time I hear them.
- You can leave your vehicle engine on when you exit the vehicle or simply turn it off by holding the triangle button(PS3)/holding the "Y" button(Xbox 360). In GTA V, you automatically turn off your engine when you leave your vehicle.
- Car dealerships: In GTA IV, you can steal vehicles from any dealerships from Grotti in Middle Park East, Algonquin, Auto Eroticar in Alderney City, Alderney & Westdyke Autos in Werstdyke, Alderney. Unlike GTA V, you have Luxury Autos in Rockford Hills, Los Santos, Premium Deluxe Motorsport in Pillbox, Los Santos, Sanders Motorcycles in Mission Row, Los Santos, Vapid of Los Santos(across the street from Premium Deluxe Motorsport) and other dealerships I haven't mention, you can't steal vehicles.
- The camera angle when driving a vehicle in IV. In GTA V, there is just only one vehicle that has a weird camera angle and it's the Vapid Taxi. It feels weird to drive around since the camera is not up close to the vehicle compare to the rest of the them. Here is what I mean:
GTA IV: Vapid Taxi(1st gen)
GTA V: Vapid Taxi(2nd gen)
GTA V: Vapid Stanier(1st gen)
GTA V: Orelot Jackal
GTA V: Benefactor Schafter(2nd gen)
GTA V: Dewbauchee Rapid GT