Model years Infiniti QX56

2005 Infiniti QX56

Complaints about this year name brake light far more often than the model's other years — 23% of them, about 56× the usual rate of 0.4%.

NHTSA opened a defect investigation into this model year.

Complaints filed80
Median for this model32
Involving a crash2
Recalls4
EPA combined14 mpg

What the complaints were about

Words owners used for the same problem are counted together, so a fault written four different ways is measured once. Grouped by which complaints they appear in, not by a list anyone wrote in advance.

Also unusual this year

What owners wrote

WHEN DRIVING, THE BRAKE LIGHT COMES ON FOR NO REASON AND CAUSES THE BRAKES TO WORK INAPPROPRIATELY. IT BECOMES VERY HARD TO BRAKE. THE BRAKES SEEM TO FALL THROUGH AND THERE IS A GRINDING SOUND FROM THE BRAKES. IF I TURN THE VEHICLE OFF, AND THEN BACK ON IT WOR…
AFTER DRIVING IN STOP AND GO TRAFFIC, SLOW SPEED WITH MANY STOPS, THE BRAKE PEDAL LOSES POWER AND BEGINS TO PULSATE. WHEN THIS HAPPENS, THE EMERGENCY BRAKE LIGHT ILLUMINATES ON THE DASHBOARD. TURMING THE VEHICLE ON/OFF SEEMS TO RESET THE CAR AND THE ISSUE IS R…

Verbatim from NHTSA complaint filings, with identifying details removed.

Recalls for this year

Own a 2005 Infiniti QX56? What happened to yours?

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How this was worked out

Every year of the Infiniti QX56 was compared against its own history rather than against other cars, which removes popularity and age from the answer — a common car draws more complaints at equal reliability, and an older one has had longer to accumulate them. A year is flagged when it drew at least 2.5× this model's median and at least 50 complaints.

This is a fault record, not a review. Nobody files a federal complaint to say the car was fine, so it shows what tends to go wrong — not whether owners liked it, and not whether it is a good car.

Source: NHTSA complaints, recalls and investigations, retrieved . Look this vehicle up directly on NHTSA's site to check anything here.

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