Told by Toyota that sludge in the engine is our fault despite regular oil changes. We don't have all our recepts but changed the oil at least 4 times since we owned the car. Impossible to believe that we were neglectful, especially when I am seeing so many other cases with the same thing happening. There needs to be an investigation here soon.

- Wood Dale, IL, USA

Engine had sludge build up that clogged engine and caused it to fail. Smoke was coming out of exhaust. Nothing lit up on dashboard, indicating a problem. Consuemr went on a 300 mile trip and had to add 21/2 quarts of oil. Dealer stated the only way it could have gotten like that was by not having oil changes. Consumer has receipts for oil added to vehicle.

- Longwood, FL, USA

While driving engine just all of a sudden lost power and vehicle started to slow down in the middle of traffic, possible engine or electrical malfunction.

- Los Angeles, CA, USA

Transmission went out at 75 mph/tachometer went to zero, and engine kept running. Dealer informed consumer that she was # 49 on waiting list for a transmission which was on back order.

- Spring, TX, USA

Have been told I have sludge build up in my engine due to lack of maintanance. I have receipts for 3 oil changes in the first 19000 miles, but they then tell me it must have been inferior oil. Have found this to be problem with people nation wide, and Toyota will not stand behind its warranty. There is no way that this problem has been caused solely due to a lack of maintanance to all the people having the same problem. Toyota wants to rebuild the engine on a one year old van with 19000 miles for $2200, though it was properly maintained. Will not accept receipts for service done as proof of maintanance. What else are we supposed to have to ensure proof?

- Cincinnati, OH, USA

With less than 15,000 miles on my van, thick grey smoke began pouring out of the back at startup. I took it in to have the oil changed (not the dealer). It was suggested that I take the car to the dealer, especially if it lost oil (which it did). The dealer found excessive sludge build up. They said they had to clean sludge from the cylinder heads and camshafts, and replace the valve covers, stem seals and related gaskets and the R&R engine oil pan. They also said they cleaned the sludge from the pan oil pump and pick up screen, and the cam caps were scored due to lack of oil lubrication. The onsite service manager (who supposedly spoke to the regional service manager) said the sludge build up was our fault and refused to honor the warranty. We paid $2670.82 for the repairs. I've had the car back less than a week, but so far no more problems. I feel that a car with less than 15,000 miles on it should not have had this kind of problem, and should have been covered by the warranty. I've talked to several other owners of Toyota who have had similar problems. Even the Toyota people implied they've seen this type of problem often.

- Round Rock, TX, USA

We have to wait for the part(s) because every Sienna has the same problem.

- Forsyth, IL, USA

The check engine light coming on seems to be a common problem in Siennas manufactured in June/July 2000. It has taken several weeks for the part to come in. I am told a transmission solenoid needs to be replaced, but they're really not sure. Toyota service and dealership response has been poor.

- Mt. Kisco, NY, USA

While having cam seal/valve seal replaced due to an oil leak, mechanic noticed right front passenger tire had a bubble and was replaced by Firestone, consumer states vehicle is going back for a 3rd time for the oil leak.

- Schenectady, NY, USA

Several T/C defects on the 2000 Toyota Siennas... why arent they not being recalled by the manufacturer?

- Bartlett, IL, USA