#1
Engine Oil Leaks
Reported across 11 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
Issue Pattern Analysis
Porsche 911 Common Problems
We analyzed every Porsche 911 reliability report across 46 model years (avg score 79/100) — here are the issues that keep showing up.
Most-Reported 911 Issues
Ranked by how often this issue appears in our Porsche 911 year-by-year reports.
Affects 24% of years
#2
Electrical System
Reported across 9 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
#3
Cooling System
Reported across 8 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
#4
Suspension & Steering Components
Reported across 6 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
#5
PDK Transmission
Reported across 4 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
#6
Cooling System Components
Reported across 3 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
#7
DME (Digital Motor Electronics) Relay
Reported across 2 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
#8
Suspension Bushings & Mounts
Reported across 2 Porsche 911 model years analyzed. Pull the full reliability report for a specific year to see exact symptoms, mileage ranges, and repair-cost estimates.
Problems by Model Year
1980 Porsche 91158/100
A dream car that demands a significant commitment in time and money, rewarding those who understand its unique challenges.
1981 Porsche 91168/100
A legendary classic offering an engaging driving experience, but only for those prepared for significant and consistent maintenance.
1982 Porsche 91172/100
A mechanically robust classic that demands informed ownership and a healthy budget for its specialized care.
1983 Porsche 91172/100
A legendary driver's car that rewards diligent maintenance with exhilarating classic performance and remarkable longevity.
1984 Porsche 91178/100
A mechanically sound classic demanding meticulous, informed ownership and a healthy budget.
1985 Porsche 91178/100
A truly durable classic that rewards diligent, well-funded ownership but punishes neglect.
1986 Porsche 91178/100
A resilient classic that rewards proper care with exhilarating performance and surprisingly strong longevity.
1987 Porsche 91178/100
A truly robust classic that demands proactive maintenance and a significant repair budget to maintain its legendary performance.
1988 Porsche 91180/100
A legendary driver's car that rewards diligent ownership with surprising vintage reliability.
1989 Porsche 91178/100
A legendary driver's car with exceptional build quality, but demand a robust maintenance budget for ongoing enjoyment.
1990 Porsche 91178/100
A truly rewarding classic driver, but only for those prepared to invest significantly in its upkeep.
1991 Porsche 91168/100
A rewarding classic requiring diligent care, but be ready to invest substantially in its upkeep.
Don't buy on guesswork
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Common-problem patterns above are aggregate. For the specific year you're shopping, the paid report breaks down: exact mileage failure windows, repair-cost ranges, recall status, and a buy/avoid verdict.
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