2008 Toyota Sienna Engine Problems

NHTSA component category: ENGINE · data through 07/12/2026

39Engine complaints

9.1%Of all 428 complaints

#4Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

STRUCTURE:BODY64 · 15%

VEHICLE SPEED CONTROL51 · 11.9%

ELECTRICAL SYSTEM42 · 9.8%

ENGINE39 · 9.1%

Unspecified / other34 · 7.9%

Share of the 428 complaints citing each category; one complaint can cite several. Full breakdown on the 2008 Toyota Sienna overview page.

What owners report

“WE HAVE OWNED THE SIENNA FOR 4 YEARS AND 53,000 MILES WITHOUT INCIDENCE. WE HAVE HAD IT SERVICED BY THE TOYOTA DEALER AND HAVE HAD…”NHTSA complaint 10470607 — filed 08/14/2012

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2008 Toyota Sienna have engine problems?

Engine is the #4 most-reported problem area on the 2008 Toyota Sienna: 39 of 428 complaints on file (9.1%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2008 Toyota Sienna have in total?

428 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 37 involved a crash, 4 involved a fire, 19 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/12/2026.