Which is more reliable, Jaguar or Porsche?
Porsche leads on our inspections: 69/100 average condition vs 57/100 for Jaguar, from 174 real pre-purchase inspections.
Porsche leads on our inspections: 69/100 average condition vs 57/100 for Jaguar, from 174 real pre-purchase inspections. The average car we check scores 61/100.
Head to head
| Jaguar | Porsche | |
|---|---|---|
| Cars inspected | 45 | 129 |
| Average condition | 57/100 | 69/100 |
| In good shape (60+/100) | 51% | 72% |
| Repainted or replaced panel | 73% | 77% |
| Structural repair found | 2% | 4% |
| Fault codes recently cleared | 31% | 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
How long do they stay good?
Good cars by mileage
▬ Jaguar▬ Porsche▬ all cars
Good cars by age
▬ Jaguar▬ Porsche▬ all cars
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.
Most common faults
Oil leaks · Engine
73%
Fuel trim out of range · Engine
42%
Active error codes · Electronic equipment
38%
Tires condition & wear · Brakes and tires
33%
Worn suspension joints · Suspension
33%
Oil leaks · Engine
50%
Tires condition & wear · Brakes and tires
36%
Low coolant / cooling system issues · Engine
30%
Worn brake rotors · Brakes and tires
27%
Active error codes · Electronic equipment
24%
FAQ
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What are the most common problems with used Jaguars and Porsche vehicles?
On Jaguars we flag oil leaks (73%), fuel trim out of range (42%), active error codes (38%). On Porsche vehicles: oil leaks (50%), tires condition & wear (36%), low coolant / cooling system issues (30%).
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How many Jaguar and Porsche vehicles have you inspected?
45 Jaguars and 129 Porsche vehicles — 174 real pre-purchase inspections. Updated Oct 27, 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 73% of Jaguars and 77% of Porsche vehicles, and recently cleared fault codes on 31% / 20%.
Buying a used Jaguar or Porsche? Get a pre-purchase inspection before you pay.
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Based on 174 inspections · updated Oct 27, 2026
