Where each one leads

Oldsmobile Silhouette

• Against cars of the same year, the Oldsmobile Silhouette comes out better in New York safety inspections (fails 49% more often than average) than the Toyota Sienna (fails 83% more often than average).

Toyota Sienna

• On Canada's official test the most frugal 2026 Toyota Sienna uses 6.6 l/100 km, the 2004 Oldsmobile Silhouette 11.6.

Only measures that do not depend on how many cars were sold: pass and failure rates against cars of the same age, ratings, fuel use and CO₂. How we compare

At a glance

	Oldsmobile Silhouette	Toyota Sienna
Model years in the US safety record	1990–2004	1996–2020

EEA new-car registrations (CC BY 4.0) · DVLA licensed vehicles (OGL v3.0) · RDW (CC0) · Traficom (CC BY 4.0) · generations: Wikidata (CC0).

Reliability and problems

	Oldsmobile Silhouette	Toyota Sienna
New York safety inspections failed	3.0%	3.1%
… against cars of the same year	+49%	+83%
US owner complaints	950	8,552
Most complaints about	Engine and engine cooling	Structure
Model year with most complaints	1998 (170)	2004 (2,062)
US recall campaigns	23	50
Manufacturer service bulletins	2,341	5,314
NHTSA defect investigations	54	32

Complaint, recall and bulletin counts grow with the number of cars sold and are not adjusted for it. UK MOT: DVSA anonymised MOT results (OGL v3.0); New York: DMV inspections; complaints, recalls, bulletins and investigations: NHTSA (public domain); odometer: RDW (CC0).

Safety

	Oldsmobile Silhouette	Toyota Sienna
NHTSA overall rating	—	5★ (2020)

NHTSA New Car Assessment Program, most recent rated model year (public domain).

Fuel, emissions and price

	Oldsmobile Silhouette	Toyota Sienna
Official combined fuel use, Canada	11.6 l/100 km (2004)	6.6 l/100 km (2026)

Canada: NRCan Fuel Consumption Ratings, most frugal version of the latest year (OGL Canada). Europe: EEA monitoring of new-car CO₂ and on-board fuel meters (OBFCM), CC BY 4.0. Price: RDW catalogue price (CC0). Finland: Traficom (CC BY 4.0).