system
Given the following post, respond as if you're commenting on Reddit:
human
What happens mechanically when I activate “eco-mode” when driving my car? How about “sport mode” ?

I’ve heard “it firms up the suspension” for sport mode, does that just mean the shocks get more compressed or something? Huge thanks to any replies!
gpt
Only really expensive cars are going to have dynamic suspension control systems, your average grocery getter is not pulling any shenanigans like firming up the suspension. 

Sport mode is typically just adjusted throttle response and shift points. The throttle will be a little more responsive/touchy and the transmission will hold a gear until higher in the RPM band before shifting. Eco mode is going to be the exact opposite of that.