I have had a short and bad experience with the MDX. In Jan. bought a 2009 Cert.Tech/Ent.Long story short, the car had a major vibration at highway speeds and pulled to the right. After 4 visits & 3 weeks w/o the car, the dealership unwound the deal and we got our money back. Figuring it was a fluke( against my husband's better judgement) we bought another MDX. A 2010. The next morning when backing out of my garage, I noticed a shudder/ pulsing vibration in steering wheel and throughout the car when I turn the steering wheel. It happens every 2-3 seconds. It happens going forward as well. Once I give it gas, it stops. It also made a loud noise every time it shuddered. Dealership said it is not normal. They put in a new power steering pump. That didn't fix problem. So Acura told them to flush the power steering (resevoir?) fluid and they found metal shavings which indicated to them to replace total rack and pinion steering. It still does it, minus the loud sound. Thoughts?