2018 Toyota Sienna — should you buy one?

Why people love the 2018 Toyota Sienna

Owners love the 3.5L V6 paired with an 8-speed automatic—it delivers smooth highway merging without the transmission hunting that plagued earlier Siennas, and the engine rarely needs major work before 200k miles. The sliding doors are mechanical, not electronic, so they don't jam like motorized versions on newer models. Parents appreciate that the third row actually fits adults on short trips, and the cargo area swallows a full sheet of plywood with the seats folded flat.

Common complaints and known issues

The transmission can shudder or hesitate between 80k and 120k miles, especially when cold; Toyota issued a software update but not all owners got it. Valve cover gasket leaks show up around 100k miles and drip oil onto the spark plug wells, leading to misfires if ignored. Door latch mechanisms wear out around 130k miles and won't stay latched when you close them gently. Some owners report infotainment screen freezes that require a full system restart, usually after 90k miles.

Typical asking price

Under 80k miles: $22,000–$28,000. 80k–140k miles: $16,000–$22,000. Over 140k miles: $11,000–$16,000. Price spread depends on trim level (LE versus Limited), local accident history, and whether the transmission software update was documented at service.

Ranges are typical 2026 asking prices, not appraisals. The actual fair offer depends on this specific car's title history, accident record, and open recalls — which is what EstimateProof tells you.