Check engine light came on at 92000 miles. The dealer diagnosed a failing turbo, around $4500 to fix. I don't expect a premium car to fail at this mileage. Also the ride is fairly harsh as is road noise. Fun to drive though.
The 2007 model drives and handles like a 5 series BMW. The seats hold you securely on spirited curves. Later models were softened up and "family car" dumbed down. If you want fun, get a 2007. If you want a polite quality family car, get a later model.
I've had no maintenance or repair problems with my RDX. All maintenance at Acura dealership. No repairs beyond scheduled service. Drive 25K/yr in Northern and Central Valley California. Most miles on I-5 at 70 mph. Also into Sierra foothills in light snow. Acceleration is great entering highway and passing on 2 lane roads.
Only negative comments - suspension is very tight. Wonderful for cornering but bothersome on poor roadways at highway speed. I still prefer it to my wife's 2007 MDX. Premium fuel required but knew this when I bought it. Interior is great except center console armrest is thin vinyl that began to wear and tear after 4 years. Mentioned to dealer and they acknowledged that other owners had same complaint. Overall great car, hoping to get 50K more on it waiting for Tesla Model 3.
the first thing i have to say is "quick". there is a slight turbo lag but when it kicks in...you're gone. and if you use the paddle shifters, forget about it. with the 4WD, even on wet surfaces, you get great acceleration. the ride is very comfortable and the back seats are higher than the front so you don't get that claustrophobic effect. it's no wonder that acura doesn't make the tiny 2.3L 4cyl turbo SH-AWD anymore...probably couldn't sell their MDXs. i have 2 gripes with the car. premium gas for the turbocharger and the rear windows don't go all the way down.