Is Porsche reliable?
67% of the 119 Porsches we inspected scored 60/100 or higher, averaging 66/100 — they tend to be in noticeably better shape than the typical used car we inspect.
#23 of 24
Longevity rank#1 Tesla holds up to ~176k~100k
Trouble-free mileageacross all body styles119
Porsches inspectedreal pre-purchase inspections66/100
Average conditionall cars we check: 60/100Based on 119 used Porsches we inspected, they tend to be in noticeably better shape than the typical used car we inspect — average condition 66/100 vs 60 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
53%
Tires condition & wear · Brakes and tires
34%
Low coolant / cooling system issues · Engine
31%
Worn brake rotors · Brakes and tires
29%
Active error codes · Electronic equipment
26%
Share of inspected Porsches where each item was flagged.
How they score
Excellent 23%
Good 44%
Mediocre 29%
Poor 4%
Hidden history
What the seller might not mention — how often we find it on Porsches.
77%had a repainted or replaced panelall cars: 76%
3%showed structural repairall cars: 4%
19%had fault codes recently clearedall cars: 23%
Compare with another brand:
Cross-shopping? Porsche vs BMW · Porsche vs Lexus · Porsche vs Mercedes
How long does a Porsche last?
Across every Porsche 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 ~100k miles. It ranks Porsche #23 of 24 brands we have enough data to rate; the longest-lasting, Tesla, holds up to ~176k. Shopping a Porsche near that mileage? Expect more wear ahead — see which makes give the best odds at your budget.
Good cars by mileage
Good cars by age
Share of Porsches 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.
Porsche models we've inspected
Cayenne
26 cars · 58% good
Macan
20 cars · profile soon
Panamera
19 cars · profile soon
911
19 cars · profile soon
Cayman
14 cars · profile soon
Boxster
10 cars · profile soon
Recently inspected:
2014 Porsche Cayman · 24k mi — flagged: low coolant / cooling system issues, brake fluid, tires condition & wear. Inspected Jun 15.
2015 Porsche 911 GTS · 7k mi — flagged: low coolant / cooling system issues, fault codes recently cleared. Inspected Jun 6.
The bottom line
These Porsches hold condition until around 100,000 miles then fall off as the second-worst brand for lasting. Oil leaks appear on 53 percent, paired with frequent cooling issues, so start under the hood looking for seepage and low coolant—those justify walking away or heavy negotiation. Expect to haggle over tires and worn rotors too, and never skip a full code scan. Lower-mileage examples keep you clear of the reliability drop.
FAQ
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What are the most common problems with a used Porsche?
Across the Porsches we inspected, the items we flag most often are oil leaks (53%), tires condition & wear (34%), low coolant / cooling system issues (31%).
Thinking of buying a Porsche? Get the exact car inspected before you pay.
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Based on 119 inspections · updated Jul 12, 2026
