Purchased this vehicle 3 months ago, used. We have had nothing but problems since. The main problems are: The roof leaks, whether it's the sunroof or something else causing the leak remains to be seen. Dealer claims no leak found, but everytime it rains there is water in the van, which now reeks of mold. The passenger power sliding door will not close properly on the first try. It keeps opening up right as it goes to close. Dealer claims fixed but still have to make 2 or 3 attempts before it will finally work. Door would not close at all 2 times in the last week. Manual override did not release the door. After waiting 5 minutes and trying again, the door would finally shut. The A/C does not blow out cool air on very hot (over 80 degrees) days.

- Chatham, NJ, USA

Purchased 2004 Nissan Quest in January of 2004. The air conditioning system emitted a very foul (musty) odor the first time I used the system in March. I took the van to the dealer. They admitted that there was an odor, but could not locate the source of the odor. The van was taken to a different dealer on 9/16/04. I took it back to the dealer where I bought the van on 9/23/04. When the smell returned, I took the van back to the dealer on 10/20/04. I have had numerous neighbors and friends ride in this van. As soon as they would sit in the van, they would ask about the smell. Took the van back to the dealer on 6/7/05 as the smell had returned. This time the dealer replaced the in-cabin air filter (scheduled maintenance) and sprayed lysol in the vents and A/C ducts. The van continued to smell and was returned to the dealer on 6/21/05. This time, the service technicians disassembled the dash to access the evaporator. The moisture drain tube (which is clear) was brown. The service manager told me this. Nissan cleaned the tube and reassembled the dash. Since each of these repairs was warranty work, I requested that Nissan pay for a rental car. Since Nissan claims that no repair work was done, I had to pay for the rental car each time. I conducted some research and learned that mold and bacteria is a common problem for automobile A/C systems. Most car manufacturers have a fix for this problem. Nissan does not. I mailed a letter to Nissan Consumer Affairs. Their representative called once and told to take the van back in for service. Each time I took the van back to the service department, I would call the Consumer Affairs. He never returned my phone calls. During my last service call with Nissan on 6/21/05, I gave the service manager a copy of a document that lists the technical service bulletins (tsbs) that most car manufacturers have for treating the mold and bacteria. Nissan does not have a tsb for this issue.

- Stafford, VA, USA

Nissan Quest 2004 has been in for service 5 times. Tire problems, console lights (possible short) and rear interior lights. The air conditioner failed, the door handle fell off, the front driver side tire was continuously losing air.

- Hopewell Junction, NY, USA

A/C problems, rattles, sliding doors raking paint off of sides of vehicle.

- Midland, TX, USA

(1) ever since buying the vehicle on May 1 2004, the A/C system on this vehicle has been performing poorly. (2) on a 100 to 110 degree day in phoenix Arizona, the A/C at best can blow 60 to 70 degrees out of the front vents even when the vehicle has been driven for 1 hour. My other 2 vehicles and my friend's 2004 Honda Odyssey all blow 40 degrees out of their front vents. The Quest A/C system is unacceptable especially with 6 month twins in the vehicle sweating. These readings were measured with a thermometer. (3) the Quest has been at the dealership 4 times. The first time they found the freon level was undercharged. They recharged the freon and check for leaks in which none were found. 2nd and 3rd time, the dealership said they cannot do anything since the A/C system was operating within their specifications. At 104 degrees, the A/C system can blow 72 to 78 degrees and still be within specifications. The specification range is unacceptable where other vehicles can easily perform better. This is becoming a safety issue living in a hot climate. I bought this vehicle with my twins in mind. If we knew the A/C system was going to perform poorly then we would have not purchase this vehicle. 4th time:after calling 1800nissan1, we took the Quest to another dealership for a second opinion. They consulted with Nissan assist and lower the freon pressure. This did not help. Called 1800nissan1 again and they said they cannot do anything else. I'm at the end of my rope.

- Mesa, AZ, USA

Air conditioning does not feel like it is blowing as cool as it should. Also, hot air coming from floor vents.

- Phoenix, AZ, USA