2021 Toyota redundant SIENNA
Problems, Recalls & Reliability Report
Quick Summary
The 2021 Toyota redundant SIENNA has 223 owner complaints filed with NHTSA — that's 2.8x the segment average of 80. The most common issue is brakes problems (36% of all complaints), specifically: van has just over 5k miles. multiple warnings occurred while at speed on a highway. primary warning was 'low brake power' and braking became extremely touchy as it seemed to utilize the emergency brake as a backup. this extreme braking is hazardous and could result in an accident caused by braking t. ⚠️ 4 fire reports filed.
223
Total Complaints
0
Recalls Issued
—/5
Safety Stars
2.8x
vs Segment Avg
Known Problems
BRAKES
80 complaints- • Van has just over 5k miles. Multiple warnings occurred while at speed on a highway. Primary warning was 'Low Brake Power' and braking became extremely touchy as it seemed to utilize the emergency brake as a backup. This extreme braking is hazardous and could result in an accident caused by braking t
- • We were driving down the freeway when we got rear ended hard by a large pickup. Then we lost electrical and engine power. The brakes stopped working. The hazard lights stopped working. Luckily we were able to coast to a complete stop as there was no way to stop the car. The police came and took a re
- • After the vehicle has been parked for a while (>1 hour in my experience), upon startup, when reversing down a hill, the brakes give the following intermittent (maybe one out of four start ups) problematic behavior. When releasing the brake pressure gradually, the car will not move, until suddenly it
“Van has just over 5k miles. Multiple warnings occurred while at speed on a highway. Primary warning was 'Low Brake Power' and braking became extremely touchy as it seemed to utilize the emergency brake as a backup. This extreme braking is hazardous and could result in an accident caused by braking t”
— NHTSA complaint filing
OTHER
29 complaints- • A lot Wind noise coming from driver side window and windshield at freeway speed. Report to Toyota service department but nothing was done to resolve the problem
- • Factory installed rear entertainment system completely blocks vision of windshield mounted rear view mirror. Toyota has a video version of this rearview mirror but does not make it available to those who purchase models below the limited and platinum version of the Sienna. They do not disclose the u
- • I was on my way to the Doctor when the tire light went off on the dash. I was a few blocks from the Doctor and managed to make it there while the tire was losing air. When I drove in and parked the car in the emergency lane, I saw the tire was completely flat. I called the Toyota road service that w
“A lot Wind noise coming from driver side window and windshield at freeway speed. Report to Toyota service department but nothing was done to resolve the problem”
— NHTSA complaint filing
SEATS/RESTRAINTS
25 complaints- • When the 3rd-row folding seats are down and stored and the breaks are applied suddenly the seat will release and attempt to return a nonstored position. I had a box of water on top of the seat to keep it from moving. Unfortunately when I breaked the box moved and the seat left the stored position
- • The third row seats in the new Sienna, like most minivans, fold flat into the floor. However, there is no latch to hold the seats in place when folded. I noticed this immediately after taking delivery of the van in April because when the seats are folded, they bounce a bit over bumps. On web foru
- • The adjustable middle seats of this new Sienna have a severe safety issue! As someone who has owned 6 prior Siennas I am very familiar with this vehicle. In past years the middle seats had two levers- -one for adjusting the back of the seat and one for moving the seat forward or back. This changed
“When the 3rd-row folding seats are down and stored and the breaks are applied suddenly the seat will release and attempt to return a nonstored position. I had a box of water on top of the seat to keep it from moving. Unfortunately when I breaked the box moved and the seat left the stored position ”
— NHTSA complaint filing
AIR BAGS
16 complaints- • Keep in mind: BRAND NEW SIENNA!!! 1. What component or system failed or malfunctioned, and is it available for inspection upon request? -The main and MOST important component was the ENTIRE airbag system which displayed "malfunctioned" ONLY AFTER the collision. The TPCS (Toyota Pre-Collision System
- • The contact owned a 2021 Toyota Sienna Hybrid. The contact received notification NHTSA Campaign Number: 23V865000 (Air Bags) however, the remedy to repair the recall was not available. The contact stated while driving from a stop light, another vehicle crashed into the driver’s front side door. The
- • This recall has been open for 7 months and a remedy has still not been issued - this doesn’t seem reasonable for a safety concern. I have also several times experienced a failure in the “extra” 8th passenger seat (middle row middle seat) sensor - it alarms that the seat belt isn’t buckled even when
“Keep in mind: BRAND NEW SIENNA!!! 1. What component or system failed or malfunctioned, and is it available for inspection upon request? -The main and MOST important component was the ENTIRE airbag system which displayed "malfunctioned" ONLY AFTER the collision. The TPCS (Toyota Pre-Collision System”
— NHTSA complaint filing
ELECTRICAL
13 complaints- • We were driving down the freeway when we got rear ended hard by a large pickup. Then we lost electrical and engine power. The brakes stopped working. The hazard lights stopped working. Luckily we were able to coast to a complete stop as there was no way to stop the car. The police came and took a re
- • I went on a trip to Missouri to visit my son and family. When going through St. Louis on 5/18/2022 I ran through a thunderstorm with a lot of rain. After I stopped, I noticed a puddle of water between the front seats. I could not find out where it came from. Later that same day I went through an
- • The navigation/touch screen has turned off and on during driving. The navigation, audio system, backup camera view were unable to be used. The next available appointment is on September 15th, 2022 and it has not been inspected by anyone. There were no warning signs prior to the incidents.
“We were driving down the freeway when we got rear ended hard by a large pickup. Then we lost electrical and engine power. The brakes stopped working. The hazard lights stopped working. Luckily we were able to coast to a complete stop as there was no way to stop the car. The police came and took a re”
— NHTSA complaint filing
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 223 owner complaints for this specific year, here's what to check or ask about:
- ☐BRAKES: Van has just over 5k miles. Multiple warnings occurred while at speed on a highway. Primary warning was 'Low Brake Power' and braking became extremely touchy as it seemed to utilize the emergency brake as a backup. This extreme braking is hazardous and could result in an accident caused by braking t
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: A lot Wind noise coming from driver side window and windshield at freeway speed. Report to Toyota service department but nothing was done to resolve the problem
Typically appears around 50K miles. Repair cost ~$500
- ☐SEATS/RESTRAINTS: When the 3rd-row folding seats are down and stored and the breaks are applied suddenly the seat will release and attempt to return a nonstored position. I had a box of water on top of the seat to keep it from moving. Unfortunately when I breaked the box moved and the seat left the stored position
Typically appears around 50K miles. Repair cost ~$500
- ☐AIR BAGS: Keep in mind: BRAND NEW SIENNA!!! 1. What component or system failed or malfunctioned, and is it available for inspection upon request? -The main and MOST important component was the ENTIRE airbag system which displayed "malfunctioned" ONLY AFTER the collision. The TPCS (Toyota Pre-Collision System
Typically appears around 50K miles. Repair cost ~$500
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Toyota redundant SIENNA — Year Comparison
How does 2021 compare to other years? Fewer complaints = more reliable.
Full years-to-avoid analysis →NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 223
- Recalls
- 0
- Fire reports
- 4
- Crash reports
- 18
- Injury reports
- 13
- Segment avg
- 80
Check a Specific VIN
See recalls for YOUR 2021 Toyota redundant SIENNA