What is the difference between a GS RS and a GT in car engines?
There are very few letter combinations that have universal meaning among car engines. So, what “RS” or “GS” or “GT” mean is entirely dependent on the manufacturer. A few initialisms do have technical meanings (e.g. EFI = Electronic Fuel Injection, VTEC = Variable [Valve} Timing with Electronic Control) but they are the minority.
