>>28474064 (OP)Nissan Versa
Super basic 4 cylinder econobox still available in a manual transmission.
Jeep Wrangler
Body on frame solid axel 4x4. The 3.6 pentastar is pretty reliable. It's the same v6 dodge used in the base challenger/charger. It's easy to wrench on and they've been around for 12 years in millions of different cars so parts availability likely won't dry up anytime soon. Also still available in manual if that matters to you.
Ford Mustang
They have huge screens and more tech now so that might be a turn off but the 5.0 coyote engine has proven to be very solid, very mod friendly and there is enough of an aftermarket that DIY self service stuff likely won't be a huge issue. Again, one of the few cars left that you can still get with a stick.
Those are my three picks for brand new cars that should be fairly good in terms of self service and repair. That's one econobox, one SUV/offroader and one sports car. You can take your pick of what appeals to you the most.