2018 Toyota Sienna Problems

Below Average Complaints

Real NHTSA owner complaints for the 2018 Toyota Sienna.

20172019
Complaints
84
per 10K Sold
9.6
US Sales
87,672
Crashes
5
Fires
0
Injuries
6
Fatalities
Recalls
7

Worst 2018 Toyota Sienna Problems

Top 3 most-reported issues with average mileage at failure.

#116 complaints

Transmission / Drivetrain

Avg mileage:61,500 mi
#29 complaints

Fuel System

Avg mileage:29,000 mi
#35 complaints

Electrical Faults

Avg mileage:26,667 mi
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All Problems by Category

Every NHTSA complaint category for the 2018 Toyota Sienna.

Transmission / Drivetrain
16
complaints
Crashes
Fires
Avg Miles
61,500
Fuel System
9
complaints
Crashes
Fires
Avg Miles
29,000
Electrical Faults
5
complaints
Crashes
Fires
Avg Miles
26,667
Engine Problems
5
complaints
Crashes
Fires
Avg Miles
26,500
Body Structure
5
complaints
Crashes
Fires
Avg Miles
13,800
Unintended Acceleration
5
complaints
Crashes
1
Fires
Avg Miles
28,012
Airbags
4
complaints
Crashes
3
Fires
Avg Miles
Gasoline Fuel System
4
complaints
Crashes
Fires
Avg Miles
Seat-Related Issues
4
complaints
Crashes
Fires
Avg Miles
Brakes
2
complaints
Crashes
Fires
Avg Miles
Air Bags:Side/Window:Curtain
1
complaints
Crashes
1
Fires
Avg Miles
Child Seat:Harness/Crotch Buckle
1
complaints
Crashes
Fires
Avg Miles
Electrical System:Instrument Panel:Speedometer/Odometer
1
complaints
Crashes
Fires
Avg Miles
Equipment Adaptive/Mobility
1
complaints
Crashes
Fires
Avg Miles
Equipment Adaptive/Mobility:Vehicle Controls:Steering
1
complaints
Crashes
Fires
Avg Miles
Headlight/Taillight Failures
1
complaints
Crashes
Fires
Avg Miles
Interior Lighting
1
complaints
Crashes
Fires
Avg Miles
Suspension Failures
1
complaints
Crashes
Fires
Avg Miles
Tire Defects
1
complaints
Crashes
Fires
Avg Miles
Wipers & Visibility
1
complaints
Crashes
Fires
Avg Miles
Sunroof/Moonroof
1
complaints
Crashes
Fires
Avg Miles
Wheel Issues
1
complaints
Crashes
Fires
Avg Miles

Search Owner Complaints

Read what owners actually reported to NHTSA for the 2018 Toyota Sienna. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.

Recalls for 2018 Toyota Sienna

7 NHTSA recall campaigns affecting ~3,359,477 vehicles.

20V682000Fuel Pump
~1,525,742 affected

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020 Lexus LS500, 2018-2019 Lexus GX460, 2017 Lexus IS200t, 2019 Lexus IS300, 2019 Lexus IS350, 2018-2020 Lexus LC500, 2018 Lexus LS500, 2019 Lexus LS500h, 2018-2019 Lexus LX570, 2017 Lexus RC200t, 2019 Lexus RC300, RC350, 2017 and 2019-2020 Lexus RX350, 2018-2020 RX350L, 2019 Lexus UX200, 2018-2019 Lexus NX300 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

20V012000Fuel Pump
~1,830,752 affected

Toyota Motor Engineering & Manufacturing (Toyota) recalled certain 2018-2019 4Runner, Highlander, Camry, Land Cruiser, Sequoia, Sienna, Tacoma and Tundra, and Lexus RC 300, RC 350, GS 350, GX 460, IS 300, LC 500, LS 500, LX 570, RX 350L, and 2019 Toyota Avalon and Corolla, and certain Lexus NX 300, and ES 350 vehicles on January 13, 2020. On March 4, 2020, Toyota expanded the recall to include certain 2014-2015 Toyota 4Runner and Land Cruiser, 2018 Avalon, Corolla, 2014 FJ Cruiser, 2017 Sienna and Lexus 2018 ES 350, 2018-2019 GS 300, 2013-2014 GS350, 2014-2015 GX 460, IS 350 and LX 570, 2014 IS F, 2018-2019 IS 350, LC 500H and LS 500H, 2013-2015 LS 460, 2015 NX 200T and RC350, 2017 RC 200T and RX 350. Toyota also removed the 2018-2019 Toyota 4Runner and Land Cruiser and 2018-2019 Lexus GX 460 and LX 570 and 2019 NX300 from inclusion in this recall. On March 19, 2020, Toyota expanded the recall to include 2015 Lexus GS350 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

19V553000Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
~303 affected

Vantage Mobility International, LLC (Vantage) is recalling certain 2012-2018 AMS Genesis wheelchair vans, built on a Toyota Sienna vehicles. The rubber brake hoses that attach to the rear wheel assembly may be too short, causing them to rub against the rear axle trailing arm.

19V532000Steering
~595 affected

Braun Corporation (Braun) is recalling certain modified 2017-2020 Toyota Sienna vehicles. The steering shaft extensions may have been improperly manufactured, possibly causing the extensions to fracture.

19V503000Equipment:other:labels
~1,325 affected

Southeast Toyota Distributors, LLC (SET) is recalling certain 2017-2019 Toyota Camry, Corolla, Rav4, Sienna, and Yaris iA vehicles equipped with factory-installed floor mats. The load carrying capacity modification label may be incorrect. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."

19V410000Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
~705 affected

Braun Corporation (Braun) is recalling certain 2014-2019 Toyota Sienna mobility van conversions. The brake lines may have incorrect tube nut fittings installed, which may cause a pressure drop within the braking system.

18V130000Wheels
~55 affected

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018 Toyota Sienna vehicles built with a specific lot of 10-spoke alloy wheels from one production facility. These wheels may not have been properly cooled during manufacturing. As a result, the wheels may crack in the spokes from an impact while driving.

Other Toyota Sienna Years

2018 Toyota Sienna — FAQ

Answers based on real NHTSA complaint and recall data for this specific model year.

Is the 2018 Toyota Sienna reliable?
Verdict: Below Average Complaints. The 2018 Toyota Sienna has 84 NHTSA complaints, 5 crash-related, and 7 recall campaigns. The most common issue is Transmission / Drivetrain with 16 complaints. Source: NHTSA via VinItel.
What are common problems with the 2018 Toyota Sienna?
Top reported problems: Transmission / Drivetrain (16 complaints, avg 61,500 mi); Fuel System (9 complaints, avg 29,000 mi); Electrical Faults (5 complaints, avg 26,667 mi). Every complaint is filed by an owner with NHTSA — this is raw reported data, not editorial opinion.
At what mileage do problems start on the 2018 Toyota Sienna?
The weighted average mileage at time of complaint is about 38,220 miles. Some components fail earlier, some later — check the "All Problems by Category" table above for per-issue averages.
How safe is the 2018 Toyota Sienna?
NHTSA complaints for the 2018 Toyota Sienna include 5 crash-related reports, 0 fire reports, 6 injuries, and 0 fatalities. These are owner-reported incidents, not official crash-test ratings — a complaint being filed doesn't confirm a defect, but clusters around specific components are worth investigating.
Does the 2018 Toyota Sienna have any recalls?
Yes — 7 NHTSA recall campaigns affecting an estimated 3,359,477 vehicles. Recalls are free to fix at the dealer. Always verify by VIN whether the specific car you're looking at has had its recalls addressed.
Should I buy a 2018 Toyota Sienna?
Fewer complaints than typical for this model. That's a good sign, but every individual car is different — the VIN still tells you what happened to this specific one.

Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.

Wider context: See the full Toyota Sienna reliability report with year-by-year comparison and generation analysis.

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