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Mercedes vs Porsche

Mercedes or Porsche — what we actually found

Side by side from 264 Mercedes vehicles and 123 Porsches buyers asked us to inspect before purchase. The average car we check scores 61/100.

vs
Head to head
MercedesPorsche
Cars inspected264123
Average condition62/10069/100
In good shape (60+/100)55%72%
Holds up to (avg dips below decent)~91k mi~98k mi
Repainted or replaced panel78%77%
Structural repair found2%3%
Fault codes recently cleared20%20%

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 25% Good 30% Mediocre 24% Poor 20%
Porsche
Excellent 33% Good 39% Mediocre 20% Poor 8%
How long do they stay good?
Good cars by mileage
▬ Mercedes▬ Porsche▬ all cars
0 25 50 75 100 Mercedes, 0–20k mi: 89% in good shape (28 cars)Mercedes, 20–40k mi: 77% in good shape (47 cars)Mercedes, 40–60k mi: 72% in good shape (46 cars)Mercedes, 60–80k mi: 52% in good shape (42 cars)Mercedes, 80–100k mi: 47% in good shape (34 cars)Mercedes, 100–120k mi: 13% in good shape (23 cars)Mercedes, 120–140k mi: 25% in good shape (16 cars)Mercedes, 140–160k mi: 0% in good shape (8 cars)Mercedes, 160–180k mi: 0% in good shape (6 cars) Porsche, 0–20k mi: 100% in good shape (13 cars)Porsche, 20–40k mi: 91% in good shape (35 cars)Porsche, 40–60k mi: 84% in good shape (25 cars)Porsche, 60–80k mi: 75% in good shape (16 cars)Porsche, 80–100k mi: 58% in good shape (12 cars)Porsche, 100–120k mi: 15% in good shape (13 cars) 40k 80k 120k 160k 200k mileage when we inspected it
Good cars by age
▬ Mercedes▬ Porsche▬ all cars
0 25 50 75 100 Mercedes, 1 years old: 90% in good shape (10 cars)Mercedes, 2 years old: 94% in good shape (16 cars)Mercedes, 3 years old: 88% in good shape (24 cars)Mercedes, 4 years old: 80% in good shape (25 cars)Mercedes, 5 years old: 65% in good shape (26 cars)Mercedes, 6 years old: 59% in good shape (22 cars)Mercedes, 7 years old: 59% in good shape (22 cars)Mercedes, 8 years old: 58% in good shape (19 cars)Mercedes, 9 years old: 38% in good shape (16 cars)Mercedes, 10 years old: 27% in good shape (11 cars)Mercedes, 11 years old: 44% in good shape (9 cars)Mercedes, 12 years old: 21% in good shape (14 cars)Mercedes, 13 years old: 8% in good shape (12 cars)Mercedes, 14 years old: 33% in good shape (9 cars)Mercedes, 16 years old: 20% in good shape (5 cars) Porsche, 2 years old: 100% in good shape (6 cars)Porsche, 3 years old: 86% in good shape (7 cars)Porsche, 4 years old: 100% in good shape (13 cars)Porsche, 5 years old: 100% in good shape (10 cars)Porsche, 7 years old: 83% in good shape (12 cars)Porsche, 8 years old: 80% in good shape (10 cars)Porsche, 9 years old: 45% in good shape (11 cars)Porsche, 10 years old: 14% in good shape (7 cars)Porsche, 11 years old: 83% in good shape (6 cars)Porsche, 12 years old: 83% in good shape (6 cars) 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; rolled-back odometers excluded from the mileage curve). Dashed grey = all cars we check.

Most common faults
Mercedes
Oil leaks · Engine
66%
Active error codes · Electronic equipment
52%
Tires condition & wear · Brakes and tires
39%
Fuel trim out of range · Engine
36%
Electronic components issues · Engine
20%
Porsche
Oil leaks · Engine
53%
Tires condition & wear · Brakes and tires
35%
Low coolant / cooling system issues · Engine
31%
Worn brake rotors · Brakes and tires
28%
Active error codes · Electronic equipment
25%
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: 57% in good shape (age-adjusted; 41 cars, raw 59%) 57 2018+: 58% in good shape (age-adjusted; 35 cars, raw 66%) 58 2009–11 2012–14 2015–17 2018+
Porsche

Not enough Porsches 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 →

Whichever badge wins on paper, the car in front of you is its own story. Get it inspected before you pay.
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Based on 387 inspections · updated Aug 22, 2026