What is the difference between BMW 730li and 740li in daily use?

Landlord, this problem can basically be ignored. 730 740 is the difference between the engine and the obvious difference between speeding up. As for the uphill problem you mentioned, both models have uphill assistance, and the speed increase is definitely not as obvious as the 740. After all, the engine is there. But it's basically enough, unless you seriously overload the car (just kidding, no one will treat the car as a van)