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Infiniti: reliability & common problems

#7 of 24
Longevity rank#1 Tesla holds up to ~187k
~123k
Trouble-free mileageacross all body styles
89
Infinitis inspectedreal pre-purchase inspections
61/100
Average conditionall cars we check: 61/100



Based on 89 used Infinitis we inspected, they are in about average shape — average condition 61/100 vs 61 for all cars we check. Every number on this page comes from real pre-purchase inspections — cars people were about to buy and paid an independent inspector to go through point by point, engine to underbody, paint depth to error codes. Not owner surveys, not warranty statistics, not forum lore: what we actually found.

What we found

Most common faults

Oil leaks · Engine
56%
Tires condition & wear · Brakes and tires
48%
Active error codes · Electronic equipment
37%
Fluid leaks · Steering (hydraulic power)
37%
Low coolant / cooling system issues · Engine
30%

Share of inspected Infinitis where each item was flagged.

How they score

Excellent 27% Good 27% Mediocre 26% Poor 20%
Hidden history

What the seller might not mention — how often we find it on Infinitis.

83%had a repainted or replaced panelall cars: 75%
8%showed structural repairall cars: 4%
24%had fault codes recently clearedall cars: 23%

Compare with another brand:

Cross-shopping? Infiniti vs BMW · Infiniti vs Lexus · Infiniti vs Mercedes

How long does a Infiniti last?

Across every Infiniti body style we've inspected — sedans, SUVs and anything else pooled together — the average one's condition dips below decent (a 55/100 score) around ~123k miles. It ranks Infiniti #7 of 24 brands we have enough data to rate; the longest-lasting, Tesla, holds up to ~187k. Shopping a Infiniti near that mileage? Expect more wear ahead — see which makes give the best odds at your budget.



Good cars by mileage
0 25 50 75 100 40–60k mi: 86% in good shape (14 cars) 60–80k mi: 82% in good shape (11 cars) 80–100k mi: 57% in good shape (21 cars) 100–120k mi: 31% in good shape (13 cars) 120–140k mi: 18% in good shape (11 cars) 140–160k mi: 71% in good shape (7 cars) 160–180k mi: 14% in good shape (7 cars) 40k 80k 120k 160k 200k mileage when we inspected it
Good cars by age
0 25 50 75 100 3 years old: 100% in good shape (5 cars) 4 years old: 100% in good shape (5 cars) 5 years old: 71% in good shape (7 cars) 6 years old: 50% in good shape (6 cars) 7 years old: 33% in good shape (6 cars) 8 years old: 45% in good shape (11 cars) 9 years old: 57% in good shape (7 cars) 10 years old: 38% in good shape (8 cars) 11 years old: 50% in good shape (8 cars) 12 years old: 40% in good shape (5 cars) 13 years old: 50% in good shape (6 cars) 14 years old: 40% in good shape (5 cars) 2y 4y 6y 8y 10y 12y 14y 16y vehicle age when we inspected it

Share of Infinitis in good shape (scoring 60+/100) by mileage and by age when we inspected them (each dot ≥5 cars; rolled-back odometers excluded from the mileage curve). The dashed grey curve is all cars we check.



Infiniti models we've inspected
Q50 18 cars · profile soon G37 16 cars · profile soon QX60 13 cars · profile soon

Recently inspected:

2012 Infiniti G37 · 105k mi — flagged: crankcase gas pressure, low coolant / cooling system issues, belts. Inspected Aug 27.
2011 Infiniti M56 · 143k mi — flagged: oil leaks, battery condition, fuel trim out of range. Inspected Aug 24.
The bottom line

Start with the body: resprays are the norm and structural repairs run twice the usual rate, so put the car on a lift and walk if anything in the structure looks touched. Then go after the engine first—oil leaks and cooling trouble show up constantly, along with live error codes, so a dry bay and a clean scan are non-negotiable. Use worn tires or hydraulic steering seepage as bargaining chips. These cars typically stay decent until about 123,000 miles, which makes a tidy lower-mileage one the smart buy; anything already leaking or structurally repaired is negotiate-hard or leave.

FAQ
?
Is Infiniti reliable?
54% of the 89 Infinitis we inspected scored 60/100 or higher, averaging 61/100 — they are in about average shape.
?
What are the most common problems with a used Infiniti?
Across the Infinitis we inspected, the items we flag most often are oil leaks (56%), tires condition & wear (48%), active error codes (37%).
Thinking of buying a Infiniti? Get the exact car inspected before you pay.
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Based on 89 inspections · updated Aug 27, 2026