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Mercedes vs Mini Reliability

In our inspections, Mercedes’ average condition stays above the “decent” threshold to around 92k miles. We don’t have that mileage read for Mini yet.

Based on 279 Mercedes vehicles and 25 Minis. “Decent” means a condition score of 55/100.

vs
Head to head
MercedesMini
Cars inspected27925
Average condition62/10063/100
In good shape (60+/100)56%64%
Repainted or replaced panel77%60%
Structural repair found1%0%
Fault codes recently cleared20%36%

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
Mercedes
Excellent 27% Good 29% Mediocre 24% Poor 20%
Mini
Excellent 32% Good 32% Mediocre 8% Poor 28%
How long do they stay good?
Good cars by mileage
▬ Mercedes▬ Mini▬ all cars
0 25 50 75 100 Mercedes, 0–20k mi: 90% in good shape (29 cars)Mercedes, 20–40k mi: 78% in good shape (50 cars)Mercedes, 40–60k mi: 71% in good shape (49 cars)Mercedes, 60–80k mi: 53% in good shape (45 cars)Mercedes, 80–100k mi: 47% in good shape (38 cars)Mercedes, 100–120k mi: 13% in good shape (23 cars)Mercedes, 120–140k mi: 11%, drawn from the nearby bands (17 cars in this band)Mercedes, 140–160k mi: 9%, drawn from the nearby bands (8 cars in this band)Mercedes, 160–180k mi: 8%, drawn from the nearby bands (6 cars in this band) 40k 80k 120k 160k 200k mileage when we inspected it
Good cars by age
▬ Mercedes▬ Mini▬ all cars
0 25 50 75 100 Mercedes, 1 years old: 94%, drawn from the nearby bands (12 cars this age)Mercedes, 2 years old: 92%, drawn from the nearby bands (17 cars this age)Mercedes, 3 years old: 88% in good shape (25 cars)Mercedes, 4 years old: 80% in good shape (25 cars)Mercedes, 5 years old: 68% in good shape (28 cars)Mercedes, 6 years old: 61% in good shape (23 cars)Mercedes, 7 years old: 59% in good shape (22 cars)Mercedes, 8 years old: 51%, drawn from the nearby bands (19 cars this age)Mercedes, 9 years old: 40%, drawn from the nearby bands (19 cars this age)Mercedes, 10 years old: 40%, drawn from the nearby bands (11 cars this age)Mercedes, 11 years old: 33%, drawn from the nearby bands (12 cars this age)Mercedes, 12 years old: 25%, drawn from the nearby bands (14 cars this age)Mercedes, 13 years old: 20%, drawn from the nearby bands (12 cars this age)Mercedes, 14 years old: 19%, drawn from the nearby bands (10 cars this age)Mercedes, 16 years old: 29%, 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. Not enough Mini data at this granularity yet.

Most common faults
Mercedes
Oil leaks · Engine
64%
Active error codes · Electronic equipment
49%
Tires condition & wear · Brakes and tires
39%
Fuel trim out of range · Engine
36%
Electronic components issues · Engine
19%
Mini
Tires condition & wear · Brakes and tires
68%
Oil leaks · Engine
64%
Active error codes · Electronic equipment
28%
Footwell module · Equipment
28%
Dirty or low engine oil · Engine
28%
Trajectory by generation
Mercedes ▲ Newer Mercedes vehicles are holding up better 40% 60% 80% 2012–14: 43% in good shape (age-adjusted; 32 cars, raw 44%) 43 2015–17: 56% in good shape (age-adjusted; 44 cars, raw 57%) 56 2018–20: 61% in good shape (age-adjusted; 34 cars, raw 68%) 61 2009–11 2012–14 2015–17 2018–20 2021+
Mini

Not enough Minis at the 5–10 year checkpoint yet to draw a generation trend.

Share in good shape when inspected at the same age (5–10 years, age-adjusted), by model-year generation; dashed = all-brand average. All brands →

FAQ
?
Which is more reliable, Mercedes or Mini?
In our inspections, Mercedes’ average condition stays above the “decent” threshold to around 92k miles. We don’t have that mileage read for Mini yet.
?
What are the most common problems with used Mercedes vehicles and Minis?
On Mercedes vehicles we flag oil leaks (64%), active error codes (49%), tires condition & wear (39%). On Minis: tires condition & wear (68%), oil leaks (64%), active error codes (28%).
?
How many Mercedes and Mini vehicles have you inspected?
279 Mercedes vehicles and 25 Minis — 304 real pre-purchase inspections. Updated Nov 13, 2026.
?
Should I still get a pre-purchase inspection?
Yes. Badge averages don't sort the good car from the tired one. We still find repainted panels on 77% of Mercedes vehicles and 60% of Minis, and recently cleared fault codes on 20% / 36%.
Buying a used Mercedes or Mini? Get a pre-purchase inspection before you pay.
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Based on 304 inspections · updated Nov 13, 2026