Buyer Research

1991 Acura NSX — Should You Buy One?

Typical asking price: $70,000–$130,000. There are 3 high-severity known issues you need to know before handing over a check.

Kestrel Take

The everyday supercar — a mid-engine, all-aluminum icon that Honda engineered to be as reliable as a Civic, and it largely is. The engine is bulletproof; the costs are the timing belt service, the notorious snap-ring transmission issue on early cars, and provenance at these values.

Known Issues for the 1991 Acura NSX

Ranked by wallet impact. These are documented, recurring problems — not freak accidents.

Timing belt / water pump intervalHigh — wallet impact

The C30/C32 V6 needs its timing belt and water pump on schedule (every ~7 years/90k miles). It's a significant mid-engine job. Verify it was done; a snapped belt is catastrophic.

Repair cost range: $1,500-$2,500

Snap-ring transmission failure (1991-1993)High — wallet impact

Early manual transmissions had a snap-ring that could fail and destroy the gearbox. Verify whether the car had the updated countershaft or the repair; it affects value significantly.

Repair cost range: $3,000-$6,000

Accident history and provenanceHigh — wallet impact

At these values, verify accident history, originality, and service records thoroughly. Aluminum body repair is specialist work.

Repair cost range: Reflected in value

Aging suspension, bushings, and electronicsMedium

Bushings, climate control, and electronics age; parts are pricey but available.

Repair cost range: $500-$3,000

Walk-Away Red Flags

✗No timing belt history
✗An early car with no snap-ring resolution
✗Accident or salvage history on an aluminum body
✗Missing service records

Good Signs

✓Documented timing belt and water pump service
✓Snap-ring issue resolved or a later car
✓Full service history and clean provenance
✓Original, unmodified condition

Found a specific Acura NSX?

This page covers what goes wrong on the 1991 Acura NSX in general. The Kestrel report covers this specific car— the asking price vs. market, the photos, the seller's description, and a BUY / NEGOTIATE / WALK AWAY verdict with a negotiation script.

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Known issues on this page are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.