2020 Toyota Sienna Pre-Purchase Inspection Checklist
Known Issues — 2020 Toyota Sienna
MODERATE
Power sliding door motor failures — final year of 3rd gen still prone
MODERATE
V6 oil consumption
MODERATE
AC evaporator leaks
MINOR
Outdated infotainment vs. incoming 4th generation
MINOR
Cargo capacity below new-generation competitors
What to Inspect
- Test power sliding doors
- Check V6 oil level
- Test AC system
- Verify all Toyota Safety Sense P features work
- Inspect all powered seating functions
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Oil change (V6) | every 5,000 miles | $70-$100 |
| Transmission fluid | every 60,000 miles | $130-$180 |
| Spark plugs | every 60,000 miles | $120-$200 |
| Brake pads (front) | every 40,000 miles | $100-$170 |
| AC service | as needed | $100-$300 |
| Coolant flush | every 100,000 miles | $100-$160 |
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