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Toyota Sienna 4th Generation (XL40)

2021–2026 · XL40 · van

The 4th-gen Sienna launched as hybrid-only across every trim, a first for a mainstream US minivan. Powertrain is the 2.5L A25A-FXS gas engine paired with the Toyota Hybrid System and a CVT. Front-wheel drive is standard; an electric rear motor enables the optional AWD. Trims include LE, XLE, XSE, Limited, and Platinum. Built on the TNGA-K platform shared with the Camry, Avalon, and Highlander.

Watch out: Generation is still in active production with limited long-term data. Owner reports of a high-pitched whine from the high-voltage transaxle on some early-build 2021 vans surface in forums; treat any single complaint as anecdotal until a formal NHTSA or Toyota campaign appears.

What your Sienna takes

The parts and fluids that fit this generation. Specs we publish are confirmed against two independent sources; the rest fill in as we verify them.

  • Tire size235/65R17✓ VerifiedView
  • Wiper blades26" driver · 20" passenger · 12" rear✓ VerifiedView
  • BatteryGroup 47 · 560 CCA min✓ VerifiedView
  • CoolantToyota Super Long Life Coolant (SLLC) · ~11.4 qtFrom owner's manualShop
  • Engine oilNot catalogued yetFind yours soon
  • Oil filterNot catalogued yetFind yours
  • Engine air filterNot catalogued yetFind yours
  • Cabin air filterNot catalogued yetFind yours
  • Spark plugsNot catalogued yetFind yours soon
  • Headlight bulbsNot catalogued yetFind yours soon
  • Brake fluidNot catalogued yetFind yours soon
  • Transmission fluidNot catalogued yetFind yours soon
  • Tire pressureNot catalogued yetFind yours soon
  • Key fob batteryNot catalogued yetFind yours soon
  • Power steering fluidNot catalogued yetFind yours soon
  • Differential fluidNot catalogued yetFind yours soon
  • Serpentine beltNot catalogued yetFind yours soon
  • Brake padsNot catalogued yetFind yours soon
  • Wheel fitmentNot catalogued yetFind yours soon
  • Brake rotorsNot catalogued yetFind yours soon
  • ThermostatNot catalogued yetFind yours soon
  • A/C refrigerantNot catalogued yetFind yours soon
  • Fuel filterNot catalogued yetFind yours soon

Floor mats

Our top custom-fit pick for the Toyota Sienna is the WeatherTech Custom Fit FloorLiners 1st row only — driver + passenger.

Floor mats for the Toyota Sienna →

Full clubhouse — owner Garage Lineage, common problems, year-by-year notes, and product picks — is on the build list.

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