 I have always only praised my Quest, the space and  comfort have always been a strong selling point for me. I had no maintenance concerns until now at 90,000 miles, the AC compressor went out ($1,200 repair) and now a valve in my transmission went out, which I reluctantly had repaired. I was warned by my mechanic that replacing the valve may or may not "fix" the issue. Unfortunately, even after the valve replacement, it is clear this transmission is faulty. After only 5 years, this being the first vehicle I purchase brand new, I am not happy.