Audi 2024 Q7 45 Vs 55 Series

Audi 2024 Q7 45 Vs 55 Series. I am bit confused i test drove 45 and 55 both looks fine to me but there is easily difference of $10k in the price. The car is primarily for running errands around town and occasional out of town trips (500 miles or so) maybe once every 2 years.

Need help deciding between an audi q7 55 tfsi s line quattro mhev and an audi q7 45 tdi quattro mhev? Car rankings, scores, prices, and specs.