The 2007 4 C Turbo eats premium gas in daily city grinding/driving. HOWEVER - exceptional reliability, incredible performance in torrential rain (Upstate New York), lots of snow (upstate & downstate- NY blizzards), cruised through major hills (Smokey Mountain), saved my life as well! The exceptionally strong metals used around the "passenger cage" deflected a blown Truck Caliper that sharded and exploded ahead of me - tore through two other cars then into mine - did not penetrate into the cabin - only deflected through a part of the undercarriage and did minimal damage under the passenger door side. 138K miles, still runs beautifully. Only major change was to the front struts recently (GET THE KYOBI BRAND MONROE DOES NOT FAIR WELL IN THIS CAR)- NYC POTHOLES) and all discs and Break pads from www.handa-accessories.com. Mobil Synthetic Oil - car still runs like new.
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.