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Infiniti vs Kia Reliability

Kia leads on our inspections: 70/100 average condition vs 61/100 for Infiniti, from 237 real pre-purchase inspections. The average car we check scores 61/100.

vs
Head to head
InfinitiKia
Cars inspected94143
Average condition61/10070/100
In good shape (60+/100)55%70%
Holds up to (avg dips below decent)~121k mi~124k mi
Repainted or replaced panel82%68%
Structural repair found7%1%
Fault codes recently cleared27%22%

Green = the better number of the pair. Condition reflects the mix of cars that came to us — age, price, model — so treat small gaps as a tie.

How they score
Infiniti
Excellent 27% Good 28% Mediocre 26% Poor 20%
Kia
Excellent 43% Good 27% Mediocre 20% Poor 11%
How long do they stay good?
Good cars by mileage
▬ Infiniti▬ Kia▬ all cars
0 25 50 75 100 Infiniti, 40–60k mi: 91%, drawn from the nearby bands (14 cars in this band)Infiniti, 60–80k mi: 71%, drawn from the nearby bands (12 cars in this band)Infiniti, 80–100k mi: 59% in good shape (22 cars)Infiniti, 100–120k mi: 46%, drawn from the nearby bands (13 cars in this band)Infiniti, 120–140k mi: 34%, drawn from the nearby bands (12 cars in this band)Infiniti, 140–160k mi: 20%, drawn from the nearby bands (7 cars in this band)Infiniti, 160–180k mi: 27%, drawn from the nearby bands (7 cars in this band) Kia, 0–20k mi: 100% in good shape (11 cars)Kia, 20–40k mi: 88% in good shape (26 cars)Kia, 40–60k mi: 85%, drawn from the nearby bands (13 cars in this band)Kia, 60–80k mi: 70% in good shape (27 cars)Kia, 80–100k mi: 61% in good shape (23 cars)Kia, 100–120k mi: 48%, drawn from the nearby bands (18 cars in this band)Kia, 120–140k mi: 43%, drawn from the nearby bands (6 cars in this band)Kia, 140–160k mi: 33%, drawn from the nearby bands (10 cars in this band)Kia, 160–180k mi: 29%, drawn from the nearby bands (6 cars in this band) 40k 80k 120k 160k 200k mileage when we inspected it
Good cars by age
▬ Infiniti▬ Kia▬ all cars
0 25 50 75 100 Infiniti, 3 years old: 93%, drawn from the nearby bands (5 cars this age)Infiniti, 4 years old: 79%, drawn from the nearby bands (7 cars this age)Infiniti, 5 years old: 69%, drawn from the nearby bands (8 cars this age)Infiniti, 6 years old: 58%, drawn from the nearby bands (6 cars this age)Infiniti, 7 years old: 53%, drawn from the nearby bands (6 cars this age)Infiniti, 8 years old: 45% in good shape (11 cars)Infiniti, 9 years old: 40%, drawn from the nearby bands (7 cars this age)Infiniti, 10 years old: 48%, drawn from the nearby bands (8 cars this age)Infiniti, 11 years old: 50% in good shape (8 cars)Infiniti, 12 years old: 41%, drawn from the nearby bands (5 cars this age)Infiniti, 13 years old: 36%, drawn from the nearby bands (6 cars this age)Infiniti, 14 years old: 41%, drawn from the nearby bands (5 cars this age) Kia, 1 years old: 95%, drawn from the nearby bands (11 cars this age)Kia, 2 years old: 94%, drawn from the nearby bands (15 cars this age)Kia, 3 years old: 90% in good shape (21 cars)Kia, 4 years old: 77%, drawn from the nearby bands (9 cars this age)Kia, 5 years old: 69%, drawn from the nearby bands (10 cars this age)Kia, 6 years old: 59%, drawn from the nearby bands (14 cars this age)Kia, 7 years old: 58%, drawn from the nearby bands (16 cars this age)Kia, 8 years old: 58%, drawn from the nearby bands (15 cars this age)Kia, 9 years old: 50%, drawn from the nearby bands (10 cars this age)Kia, 10 years old: 53%, drawn from the nearby bands (6 cars this age)Kia, 11 years old: 71%, drawn from the nearby bands (5 cars this age) 2y 4y 6y 8y 10y 12y 14y 16y vehicle age when we inspected it

Share in good shape (scoring 60+/100) by mileage and by age when we inspected them (each dot ≥5 cars; a band under 20 cars follows the nearby bands, so a run above the all-cars line stays above it, and a band of 20 or more uses the rate we measured; where a band has too few cars, the line follows the trend between the bands on either side; rolled-back odometers excluded from the mileage curve). Dashed grey = all cars we check.

Most common faults
Infiniti
Oil leaks · Engine
57%
Tires condition & wear · Brakes and tires
49%
Active error codes · Electronic equipment
35%
Fluid leaks · Steering (hydraulic power)
35%
Low coolant / cooling system issues · Engine
31%
Kia
Oil leaks · Engine
45%
Tires condition & wear · Brakes and tires
34%
Fuel trim out of range · Engine
31%
Low coolant / cooling system issues · Engine
22%
Active error codes · Electronic equipment
16%
FAQ
?
Which is more reliable, Infiniti or Kia?
Kia leads on our inspections: 70/100 average condition vs 61/100 for Infiniti, from 237 real pre-purchase inspections.
?
What are the most common problems with used Infinitis and Kias?
On Infinitis we flag oil leaks (57%), tires condition & wear (49%), active error codes (35%). On Kias: oil leaks (45%), tires condition & wear (34%), fuel trim out of range (31%).
?
How many Infiniti and Kia vehicles have you inspected?
94 Infinitis and 143 Kias — 237 real pre-purchase inspections. Updated Oct 28, 2026.
?
How long do Infinitis and Kias stay in good shape?
In our data, the average Infiniti dips below “decent” around ~121k mi; Kia around ~124k mi. Individual cars vary — get the one you’re buying inspected.
Buying a used Infiniti or Kia? Get a pre-purchase inspection before you pay.
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Based on 237 inspections · updated Oct 28, 2026