Toyota Scion Xa owners have reported a total of 125 problems for their cars built in the 3 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the Toyota Scion Xa. The 2006 Toyota Scion Xa cars have the most problems reported (65 problems).
The following chart shows the 21 most common problems for Toyota Scion Xa cars. The number one most common problem is related to the vehicle's air bags (17 problems). The second most common problem is related to the vehicle's engine and engine cooling (15 problems).
|Problem Category||Number of Problems|
|Engine And Engine Cooling|
|Gasoline Fuel System|
|Vehicle Speed Control|
|Unknown Or Other|
|Other Fuel System|
It would not be fair to compare the Toyota Scion Xa of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across Scion Xa model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.
PPMY = P / S / Y * 1000,
where P = total problems reported during the life of a Toyota Scion Xa model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).
The results are shown in Table 3.