Ceramic coat a new car?

[Halitosis]

We have our first ever brand new car on order and seek advice on whether (and what) protective coating we should go for. The car will be black, kept on the drive, and - if I'm being realistic - taken for a jet wash every month or so and I'd have the motivation to polish it a few times in the first year and then less often...
We intend to keep the car 5 years or so, and are looking for the most cost-effective way to retain maximum resale value. Thanks for any advice

[Halitosis]

Thanks both. Its an Audi Q3 £37k. I appreciate a specialist detailer would be the best no-expense-spared option, but given I honestly won't have the commitment to lovingly hand wash it regularly, it will inevitably be taken to the jet-wash every few weeks.
So with that in mind, would spending thousands on a protective coating add much to the resale value in 5 years? Might a DIY coating or applying wax 3 times a year see a similar resale value in 5 years?

[Halitosis]

Thanks all for the great advice. We won't bother with a coat and I'll try to avoid the jet wash as much as I can (had no idea it's so bad for a car's paintwork)