The Toyota Scion xB draws 1.57 complaints per production run against 3.73 for the average car — better than typical. Failures cluster at 12 years, so only 0% of them fall inside the 3-year basic warranty.
Toyota Scion xB years to avoid — and the best ones
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? |
|---|---|---|---|---|
| 2008 | 11 | 7 | yes |
When it starts to break
Not the calendar year the complaint was filed — the age of the car when it failed. That age decides who pays: inside the warranty the manufacturer does, outside it you do.
| Age at failure | Complaints | Running total | Warranty |
|---|---|---|---|
| 8 years | 9.1% | you pay | |
| 9 years | 27.3% | you pay | |
| 10 years | 36.4% | you pay | |
| 12 years | 100% | you pay |
Basic warranty on this car is 3 years / 36,000 miles. Only 0% of reported failures happen inside it — the remaining 100% come out of the owner's pocket. Powertrain cover (5 years / 60,000 miles) reaches further, but it only covers engine and transmission, and most complaints here are not either.
What actually fails — and at what age
Ordered by how often owners reported each system, with the age at which it typically goes. What waits further out is Unknown Or Other at 12 years — past every basic warranty, and the bill lands on whoever owns the car then.
| System | Complaints | Typical age | Crash | Fire |
|---|---|---|---|---|
| Unknown Or Other | 12 yrs | — | — | |
| Engine | 10.8 yrs | — | — | |
| Structure | 12 yrs | — | — | |
| Air Bags | 9 yrs | — | — | |
| Fuel/propulsion System | 8 yrs | — | — | |
| Service Brakes | 12 yrs | — | — |
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
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How we measure it
Reliability scores usually arrive as a number out of five with no working shown. The Toyota Scion xB figure here comes out of 11 individual reports, and here is exactly how they were turned into a rate — two steps in it are arguable and you should be able to argue with them.
Rate, not total. Volume alone would decide the ranking, so we divide by the number of production runs — the distinct first-eleven-character VIN prefixes on record. The Toyota Scion xB alone splits into 7 runs carrying 11 complaints — 1.57 per run against 3.73 for the market.
Age, not year. Incident date minus model year gives the age at failure, which is what the warranty question turns on. 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. Filing with a federal regulator takes effort, so what you see are faults someone judged serious — not scratched paint, not running costs, not how nice the car is to live with. For the Toyota Scion xB the file runs from 2008 to 2008, so the older years carry a full life of reports and the newest carry almost none.
Frequently asked questions
Is the Toyota Scion xB reliable?
It draws 1.57 complaints per production run against 3.73 for the average car, so better than typical. Failures cluster around 12 years of age.
What are the best and worst years for the Scion xB?
Not enough model years with sufficient history to rank.
How long does a Scion xB last?
Complaints reach their halfway point at 12 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?
Unknown Or Other with 4 complaints, typically at 12 years of age.
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