2011 Toyota Prius: excessive oil consumption

Filed Sep 18, 2023 · Brakes, Electrical · KY

Brake booster and brake booster pump assembly are faulty and failing. Brakes are still functioning, but will ultimately fail without warning, from what I have read. This is highly dangerous for myself and other motorists. I was driving last week and tried coming to a stop at an intersection. I pushed the brake pedal and the car hesitated and then jumped/lurched forward before coming to a complete stop. The brake booster is sounding every 30 to 45 seconds to try and build back the pressure it is losing. Toyota offered a "Customer Support Program" for these parts, as there's been numerous premature failures. Unfortunately, my vehicle no longer fits within the parameters of the support program (see attached). From what I've read though, Toyota has been negligent with replacing the brake booster under the support program. I have called Toyota Corporate and they have offered no reprieve and won't stand behind this faulty part. Toyota needs to be forced to recall these 3rd gen Priuses and ordered to replace the breaking system. Expecting customers to shell out between $2-3k to have the ability to safely break/stop their vehicle is ridiculous, especially when Toyota is more than aware of this issue. I was quoted $2600 over the phone to remedy the issue from an independent hybrid shop. I've owned 7 Toyotas and two have been Priuses. This 2011 is by far one of their worst to roll off the assembly line with numerous reports of breaking problems, oil consumption issues, and head gasket failures. They need to stand behind their product(s), especially to brand loyal customers. Read more complaints about the breaking system: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 7, 2019 · Engine · 94,000 miles · CA

Excessive oil consumption of approximately 1 quart per 1,000 miles as of may 2019. Toyota agreed to do a oil consumption test in july 2017 but determined that 1 quart per 1,200 miles was within normal range. Consumption problem has gotten worse and will probably result in having the engine block replaced with a used one at a cost of approximately $5,000

Filed Oct 5, 2018 · 100,000 miles · CA

I have a 2011 prius, and it failed toyota's oil consumption test twice, around 110,000 miles. It consumes oil way so quickly that I have to add oil 2-3 times between scheduled oil changes. Bob smith toyota (la crescenta, ca) performed the test per toyota's instructions and acknowledged the problem but did not take any measures to remedy the problem. There are hundreds of thousands of 2010-2012 toyota prius owners who purchased this vehicle on the premise of being a "eco friendly hybrid" toyota is clearly negligent and after having an attorney draft letter to toyota they still will not accept any responsbility.

Filed Jul 31, 2018 · 90,000 miles · CA

I noticed around 90,000 miles that my car began consuming oil at any accelerated rate, so I didn't think too much about it. Then I noticed that I my oil gauge was turning on every 1,000-1,200 miles, my car was completely out of oil. I went online to toyota prius forums and started doing more research and this is a common problem for 2010-2011 prius's. Bob smith toyota, in la crescenta, who sold me the car, ran an oil consumption study and concluded that there is a major issue and they contacted toyota did not want to acknowledge there is an problem for the sake that this could result in a class action lawsuit based on negligence.

Filed Aug 9, 2017 · Engine · 70,000 miles · CA

Excessive engine oil consumption - 1qt every 2,000 miles.

Filed Jan 4, 2017 · Engine · 150,000 miles · MN

At approximately 120,000 miles we started receiving messages from our dealership that the car was starting to use oil even though we have performed all required maintenance and on time. Then between 130,000 and 140,000 we starting getting an oil light that would come on during cornering. We were told to keep a gallon of oil with us and fill it between changes and we did. It would use about 1 to 2 quarts between changes. Then at 150,000 the engine blew up. It was within the time limits of the warranty but not the mileage so toyota would not help us out on a new motor. After that I researched on line and others are having similar problems. Most if not all our miles were highway cruising miles so easy miles. We drove this thing like a baby. We have owned many other vehicles to well over 250,000 so this is not a case of we don't take care of our vehicles. The motor right before it blew was making a loud screeching noise but no lights on the dash to indicate that anything was wrong.

Filed Jul 21, 2016 · Engine · 110,000 miles · TX

Request help with 2011 toyota prius oil consumption, quality, safety, & air pollution issues: I bought the car new. Just after 100,000 miles I noticed it was using oil between oil changes. It has gotten way worse to now at 145,000 miles it used 3 qts in 2000 miles. It does not warn you that the oil level is low until you are 3.5 qts low & a messages says you have low oil pressure. This is unsafe in that the car could go dry on oil and the engine sieze up. There is a tsb on this for other toyota vehicles, but not yet prius. I believe prius needs to be added to the list & I want toyota to replace my engine or at least the piston rings. So far toyota is not admitting to oil consumption problems with the prius. This is also a possible emissions issue. I contacted toyota's customer experience center in feb 2016 and they set-up case no. 1602170764 to track my complaint. They referred me to alamo toyota in san antonio. I do not believe that toyota is being proactive in addressing this problem. After researching this issue on line, I have found many other toyota prius owners with the same problem. The problem does not show up until you are close to the 80,000-100,000 miles point and so for those folks that drive less, the problem may not show up for another couple of years. I thank you in advance for any help that you can provide to me. I spent over $23,000 for this car and hoped it would give me trouble-free transportation for more than 4 years and 100,000 miles.

Filed Jul 20, 2016 · Engine · 129,098 miles · NJ

Prius started consuming oil around the 105,000 mile mark. Two months ago, I took it to the dealer and they had me come back after 1100 miles after my oil change. They said it was consuming oil because the piston rings were leaking. The lady tried to sell me a used engine for 3,000 or 5,000 dollars. I told her that is why I bought toyota because I didn't want to spend money after 100,000 miles. I have looked online and this practically happening to all the 2010-2011 prii. My buddy owns and camry and just had his block/piston rings changed for the same problem. This morning, I am a 100 miles from the need of an oil change, and when apply the breaks I get a yellow light coming on saying "not enough oil pressure". I google this and people are saying it is because my oil is low again. I think toyota is trying to avoid having to recall this.

Filed Apr 27, 2016 · Engine · 100,000 miles · PA

This car consumes oil... It dose not leak the oil and the dealer says that one quart in 1200 miles is normal... This oil is polluting the atmosphere and is expensive. I fi was told that it would consume this much oil at 100k, I would not have purchased the car.

Filed Nov 16, 2015 · Engine, Transmission · CA

Excessive oil consumption. Recently I notice oil pressure low light lights frequently. It used the oil was changed every time the maintenance light come up. About every 5000 miles. Now the low oil pressure comes almost every 1000 miles. The car only has 89k miles.