Question 1

Is the Toyota Sienna or Honda Odyssey cheaper to own over 10 years?

Accepted Answer

The Sienna (now hybrid-only) wins on long-term cost by ~$2,000–$2,800 over 10 years/150,000 miles. The Sienna Hybrid's 2.5L + eCVT averages ~$5,900 in maintenance and fuel savings; the Odyssey's 3.5L V6 + 10-speed automatic runs ~$8,100 because of bigger oil capacity, premium-recommended fuel for towing, and the 10-speed's quirks.

Question 2

Which has better resale: Sienna or Odyssey?

Accepted Answer

Sienna wins on resale — 58% at 5 years vs 49% for Odyssey (KBB). The Sienna Hybrid's exclusive hybrid drivetrain since 2021 has driven used values to near-MSRP levels in some markets. Odyssey resale is hurt by VCM (Variable Cylinder Management) misfire issues that buyers actively avoid.

Question 3

What's the biggest maintenance difference between Sienna and Odyssey?

Accepted Answer

The Odyssey's VCM (Variable Cylinder Management) on the 3.5L V6 is a known oil-burner — it can require additional quarts between changes and may need spark plug replacement at 60k vs 100k. The Sienna Hybrid has no such issue but adds hybrid battery cooling fluid (~$120 every 5 years) and traction battery checks at 100k.

Question 4

Which has cheaper transmission service: Sienna or Odyssey?

Accepted Answer

The Sienna's eCVT (planetary gearset, no belt) is essentially maintenance-free — just an inspection at 60,000 miles. The Odyssey's 10-speed automatic uses Honda ATF-Type 2.0 every 60,000 miles at ~$110 per drain-and-fill. Over 10 years that's $0 vs $250 in fluid services.

Metric	Toyota Sienna	Honda Odyssey
10-year maintenance total	$5,710	$7,400
Average annual cost	$571	$740
RepairPal reliability rank	#1 of 8 (Minivans)	#3 of 8 (Minivans)
Reliability notes	4.0/5 - 2021+ hybrid-only platform is excellent	3.5/5 - 3.5L V6 with VCM known for oil consumption
Resale / long-term value	Retains ~57% value at 5 yrs - best in class	Retains ~50% value at 5 yrs

Service	Toyota Sienna	Honda Odyssey
Drivetrain	2.5L hybrid eCVT (2021+)	3.5L V6 + 10-speed auto
Oil change interval	10,000 mi / 12 mo	7,500 mi (Maintenance Minder)
Transmission fluid	eCVT - minimal service	10-spd ATF at 60k
Spark plugs	Iridium at 120k	Iridium at 100k (6 plugs)
Brake pads	Hybrid regen = 2x brake life	Traditional - replace ~40-60k
Fuel economy	~36 mpg combined	~22 mpg combined
Warranty	ToyotaCare 2 yr + 10 yr hybrid battery	None from factory

Toyota Sienna vs Honda Odyssey: 10-Year Cost to Own (2026)

Toyota Sienna vs Honda Odyssey: 10-year cost breakdown

Toyota Sienna vs Honda Odyssey: maintenance schedule differences