Reliability Report · Multi-Source Data

Porsche Cayenne (2015–2017) Reliability

The Porsche Cayenne (2015–2017) scores 86/100 on our composite reliability index — excellent territory — drawn from DVSA, NHTSA data. The most-flagged failure mode is coolant pipe failure (v8), typically surfacing between 80,000 and 200,000 km. Workshop repair runs €2,000–€4,000. Estimated used prices span €18,800–€56,700.

Composite Score
86
/ 100
Excellent
Sources: DVSA · NHTSA · latest 2026
Market Snapshot
Listed model years2015–2017
Est. used price€18,800–€56,700
Documented issues1
Listings in catalogue14
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Reliability by Source

Each independent organization measures reliability differently. TÜV reports inspection defect rates by age band. ADAC reports pan-European breakdowns per 1,000 vehicles. NHTSA aggregates US consumer complaints. DVSA MOT data is the UK fleet's annual safety inspection — every car 3+ years old. Lower variance across sources = higher confidence in the composite.

NHTSA (US Complaints)
Model years 2013–2019 · 2026 report · n=138
138 complaints across 5 sampled year(s); resolved model="CAYENNE"
View source ↗
72
/ 100
DVSA MOT (UK Inspections)
Model years 2004–2021 · 2024 report · n=69701
69,701 UK MOT tests · overall 9.1% fail rate vs UK fleet baseline
View source ↗
95
/ 100
DVSA MOT (UK Inspections)
Model years 2003–2020 · 2023 report · n=27487
27,487 UK MOT tests · overall 13.4% fail rate vs UK fleet baseline
View source ↗
87
/ 100

UK MOT Reliability Detail

Based on 69,701 MOT tests in the UK during the 2024 reporting period. Score for each age band reflects this model's fail rate vs the UK-fleet baseline fail rate at the same age — a generation-aware metric.

Age 3–5 yrs
95
4.2% fail vs 10.9% fleet
19,082 tests
Age 6–9 yrs
94
7.9% fail vs 19.2% fleet
21,217 tests
Age 10–14 yrs
97
10.7% fail vs 32.1% fleet
19,099 tests
Age 15–20 yrs
92
17.6% fail vs 38.8% fleet
10,303 tests

Most Common MOT Failure Categories

#1
Registration plate lamp(s)
4,949
25.4%
#2
Condition
4,523
23.2%
#3
Windscreen
4,455
22.9%
#4
Headlamp
3,129
16.1%
#5
Coil spring
2,430
12.5%

Categories ranked across all MOT tests of this model in the UK during the 2024 period. "Condition" covers cosmetic / wear issues; suspension and braking dominate the rest.

Known Issues

Specific failure modes documented across European workshops, owner forums, and TSBs. Costs in EUR (and USD reference) reflect typical retail European labor + parts ranges — specialist shops at the low end, dealer pricing at the high end.

Coolant pipe failure (V8)
Typical at 80,000–200,000 km
Early Cayenne/Panamera 4.5/4.8 V8 plastic coolant pipes in the valley fail; uprated alloy pipes are the fix.
€2,000–€4,000high

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