The Isuzu Trooper II draws 1 complaints per production run against 3.72 for the average car — better than typical. The worst model year is 1990 at 1 complaints per run; the best is 1988 at 1 — a 1.0-fold gap between two cars wearing the same badge. Failures cluster at 0 years, so only 0% of them fall inside the 3-year basic warranty.
Best and worst years
Ranked by complaints per production run rather than by raw count. A raw count only tells you which year sold well — the best-selling year always looks like the worst car. Dividing by the number of runs removes sales volume and leaves the fault rate.
| Model year | Per run | Complaints | Runs | Enough history? |
|---|---|---|---|---|
| 1990 | 3 | 3 | yes | |
| 1988 | 5 | 5 | yes |
Recent years are marked «too new» and left out of the ranking on purpose. Complaints accumulate for a decade after a car is sold, so a 2026 build will always look flawless next to a ten-year-old one. Comparing them would be dishonest. Among the 2 years with enough history, 1990 is the one to avoid and 1988 the one to look for.
What actually fails
Systems by number of complaints, with the age at which each typically goes. The age column is the useful one — it tells you what to expect next on a car you already own, and what to inspect on one you are about to buy.
| System | Complaints | Typical age | Crash | Fire |
|---|---|---|---|---|
| Engine And Engine Cooling | — | — | — | |
| Electrical System | — | — | 1 | |
| Visibility | — | — | 1 | |
| Service Brakes | — | — | — | |
| Hydraulic | — | — | — | |
| Suspension | — | — | — | |
| Unknown Or Other | — | — | — | |
| Power Train | — | 1 | — |
What else in this class
Same vehicle class, so the comparison is fair — an estate against an estate, not against a coupé.
Good year or bad year — the VIN settles it.
- Check any VIN against complaints for its exact build year and plant
- Exact value for that car, adjusted for its mileage
- Full research report as a PDF you can hand to a mechanic
- Alerts if a recall lands on a car in your garage
- No ads, on every page
- No ads, no tracking — and much more
How we measure it
Reliability scores usually arrive as a number out of five with no working shown. We publish the arithmetic instead, because two things about it are arguable and you should be able to argue with them.
Rate, not total. A model that sold three million units collects more complaints than one that sold thirty thousand, and that says nothing about either. So we divide by the number of production runs — the distinct first-eleven-character VIN prefixes on record. Across 1,100,006 complaints and 295,326 runs the market average works out at 3.72 per run.
Age, not year. Every complaint carries an incident date and a model year, so we can work out how old the car was when it failed. That is what the warranty question turns on, and it is why our «worst year» rankings exclude anything built in the last 6 years — those cars simply have not had time to break yet.
What this is not. A complaint to NHTSA is a deliberate act, so this measures serious faults, not paint that scratched. It says nothing about running costs or how nice a car is to own. And an absence of complaints on a rare model means an absence of owners, not excellence.
Related tools
Frequently asked questions
Is the Isuzu Trooper II reliable?
It draws 1 complaints per production run against 3.72 for the average car, so better than typical. Failures cluster around 0 years of age.
What are the best and worst years for the Trooper II?
Worst is 1990 at 1 complaints per run; best is 1988 at 1. Years newer than 6 are excluded — they have not had time to accumulate complaints.
How long does a Trooper II last?
Complaints reach their halfway point at 0 years. That is when faults start being reported in volume, not when the car stops — but it is the point at which ownership starts costing money.
Will the warranty cover it?
Basic cover is 3 years / 36,000 miles, and 0% of reported failures fall inside it. The rest are yours.
What fails most often?
Engine And Engine Cooling with 4 complaints.