Infiniti Q45 VIN Check

Which build runs owners report most

Characters 1–11 of a VIN identify the production run — plant, model year, body and engine — which splits the Infiniti Q45 into 96 distinct batches rather than one nameplate. On the Infiniti Q45 that distinction is not academic: its 96 runs average 1.7 complaints each, but the worst one — JNKNG01C4LM, a 1990 build — carries 4. That is 2.4× the model average, and the difference is invisible if you only look up the model name. The five runs at the top of this table hold 12% of every Q45 complaint on file.

Match the first eleven characters of your own VIN against these 12 runs. A hit means the fault reports below describe your exact build; no hit means yours sits among the 84 Infiniti Q45 runs that drew fewer reports than any listed here.

Which model years to check twice

Ranked by complaints per production run, not by raw count — a raw count only tells you which year sold well. On the Infiniti Q45 the spread between build years is 2.3×: a 1990 car draws 2.3 complaints per run, a 1995 one 1. Same badge, same factory in most cases — different year.

Heaviest year here is 1990 at 2.3 complaints per run; lightest is 1995 at 1. Every year listed is old enough to have finished collecting reports — the newest Infiniti Q45 here is a 2005.

What to inspect on this car

One system accounts for 18% of everything Infiniti Q45 owners report: Power Train. Put it at the top of the inspection list — power train is where 24 of the 162 complaints on file landed, and a mechanic given a named part finds more than one told to «look it over».

Open recalls to verify

NHTSA has 11 recall campaigns on the Infiniti Q45, covering build years 1997 to 2006, and every one of them is free to fix at any franchised dealer, for the life of the car, whoever owns it now. The work only happens if someone books it, though — and a used car that changed hands may never have been brought in. Check each campaign below against your VIN.

The digits in a campaign number carry the year it was opened. Take 12V079000 above: opened in 2012 on cars built from 2003 — 9 years of that fault on the road before anyone acted.

How serious were they

A complaint count on its own is a weak signal — a rattling trim panel and a stalling engine both count as one. Of the 162 reports on the Infiniti Q45, 11.1% involved a crash against 5.8% across all vehicles — above the norm, and that ratio matters more than the raw total.

Crash-related reports run 91% above the all-vehicle rate. That does not make the car unsafe on its own — but it does mean the faults owners report here tend to be the kind that end in an accident, not a squeak.

How this check works

The file behind this page holds 1,109,349 complaints filed with NHTSA between 1981 and 2026, across 297,579 production runs. The Infiniti Q45 share of that is 162 complaints over 96 runs — 0.01% of everything on record. Each one carries the reporter's VIN prefix, the systems involved and whether the incident produced a crash, a fire or an injury.

Grouping those 96 runs by prefix is the whole point. Counted at model level the Infiniti Q45 averages 1.7 complaints per run, which hides the fact that one run carries 4 of them — a 2.4× difference the model name alone will never show you. We publish the eleven characters in full — they identify a batch, not a car, since the six-digit serial number naming the individual vehicle is not part of them.

Everything above is built from those 162 safety records and nothing else, so title brands, odometer readings, auction history and insurance write-offs are not in it — they live in DMV and insurer databases rather than NHTSA's, and no free tool has them, this one included.