we have no debt - including no mortgage - and we're about 40% over target figure for full FIRE for both of us.
You may have noticed some of the folks on this forum are a bit fanatical about doing everything exactly as MMM would do.
They treat the MMM philosophy as if it were Gospel brought down on stone tablets from God, with no variations allowed- I guess we could call them evangelical Mustachians. :)
But others here are less steadfastly bound to the gospel, and do allow an occasional un Mustachian indulgence, as long as it doesn't throw off the overall goal to FIRE.
It sounds like you are doing fine, and well on the way to FIRE. So as long as this doesn't throw off your FIRE plans, I say go ahead.
My wife likes nice cars. She drove a junker for years, but in the 90's she bought her first new "near luxury" car, even though we were not quite FIRE ready at that point.
That was before we made our first million. She drove the car for years, and now drives a BMW (also bought new). We are now multimillionaires, and neither of us have ever regretted those purchases (nor will either of us regret it when she gets her "baby" Tesla next year). I drive an old vehicle, because only because I'm not a "car guy" and really have no desire to have a nice car.
I'm frugal, but it doesn't hurt to knock the rust off your coin purse once in a while and buy something you like. Just don't make a habit of it.
If you don't spend a little once in a while, you'll end up like this guy:
