2023 XC90 Buying Advice - B5 Petrol

Current vehicle is an Audi Q7 with 150,000 on the clock. 3.0 TDI , it feels like every month there is another bill since it's 5.5yrs old and well out of warranty. I do mostly motorway miles and get a respectable 33-35mpg on average (18,000 a year)

I've seen a 2023 Volvo XC90 Ultimate with the 2.0 B5 Petrol Engine (Can't go T8 - Have no way to charge it at home or at work).

It's priced at £39,999, and has 15,000 miles on the clock. It feels like an "ok" deal and would cost me around £375 a month (before the additional premium tax, and additional fuel costs for a thirsty petrol)

Does that sound like a decent deal or should I keep looking? Is the 2.0 Petrol a bad idea for someone like me? I'd be interested to hear what true mpg you get out of yours if you have one please.