2015 Infiniti Q50
Complaints about this year name valve body far more often than the model's other years — 24% of them, about 60× the usual rate of 0.4%.
Generation 1 of the Infiniti Q50, which began in 2014. Everything below compares this year against the others in that generation, not against a different car wearing the same name.
NHTSA opened a defect investigation into this model year.
| Complaints filed | 125 |
|---|---|
| Median for this model | 30 |
| Involving a crash | 16 |
| Involving a fire | 2 |
| Recalls | 3 |
| NHTSA crash rating | 5/5 |
| EPA combined | 22.5 mpg |
What the complaints were about
- transmission — 27.2% of this year's complaints, against 0% across the model's other years (136×).
- shifting — 12% of this year's complaints, against 1.2% across the model's other years (10.1×). Owners wrote it as: shifting, inspect, coming under, towed local.
- happen — 20.8% of this year's complaints, against 8.3% across the model's other years (2.5×). Owners wrote it as: happen, unexpectedly, starts, popped.
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
- transmission — 27% of complaints, 16× usual
- gear — 19% of complaints, 48× usual
- speed sensor — 12% of complaints, 30× usual
What owners wrote
The car just slowed down super fast on freeway almost got rear ended. It would not go past 3rd gear. Poor acceleration. Could have caused a huge accident. I got it diagnosed and they said it is valve body/speed sensor/tcm and they said this is a COMMON problem…
My car has 60,000 miles on it and multiple mechanics as well as the Infiniti dealership tell me it needs a new transmission. $8,000. It will not shift above 2nd gear. I took the valve body and manifold out of the transmission and was surprised to find that the…
Verbatim from NHTSA complaint filings, with identifying details removed.
Recalls for this year
- 16V430000 STEERING Fixed free of charge.
- 16V244000 AIR BAGS Fixed free of charge.
- 24V470000 POWER TRAIN Fixed free of charge.
How this was worked out
Every year of the Infiniti Q50 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.
Own a 2015 Infiniti Q50? What happened to yours?
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