EspenM3 skrev:Ser at det skal være noen utstyrsmessige forbedringer på 1991 modellen i forhold til 1990. Noen som kan forklare meg hvilke detaljer dette er? Lurer på en bil som selger sier er 1991 modell, men den er første gang registrert i oktober 1990. Hvordan se om dette virkelig er en 91mod 
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http://www.allweelmotion.com :
riktignok ikke heltsvar på spørsmålet, men er da litt relevant..
The differences between US spec 1990-1991 and 1992-1993 Celica ST185s:
All ('90-'93) US spec All-trac have center LSD and rear Torsen. The viscous coupling center LSD was added to '92-'93 (included RC/CS).
JDM and '90-'91 US have single button for "Auto" AC, while the '92-'93 US have "Auto" mode on the fan switch between off and low. The JDM, Euro, and general spec also have "Economy" mode.
Emblems: '92-'93 has oval "T" on hood & trunk, "Toyota Celica" on trunk. '90-'91 had no oval emblem, "TOYOTA" on front grille, and "CELICA" above license plate in the red frame.
Tail lights: '92-'93 has smoke (dark red) frame. '90-'91 normal red lenses.
Shifter: '92-'93 has shorter shift and all leather shift knob.
Weight: 3272 lbs ('90-'91) vs 3219 lbs ('92-'93).
Sound system: '90 only has separate unit of Radio/Cassette and CD,
91-'93 has 3 in 1 R/C/CD unit for System 10.