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Engine coolingPart report

2008 Scion XB Engine cooling Problems

Complaints
7about this part
Share
2%of 339 total for the year
Median mileage
37,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the engine cooling of the 2008 Scion XB, 2% of the 339 complaints for this model year. Where a mileage was given, the median is 37,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The 1st thing I noticed after starting my car after work was the heater was blowing cold air, even after 4 miles on the road (2 lane road - 40 mpg). About 4 miles further on (freeway - 60+ MPH), I noticed a thin grey cloud behind me, but the evening mists were evident, so I wasn't sure at first if it was coming from my car. I checked the temperature gauge which showed flat cold - unusual! I checked my rearview mirror again, maybe 200 yds later, and there was a paler grey cloud following me. I checked the instrument panel again and there were no warning lights showing. …”

NHTSA complaint #10693440, filed 2015-03, 94,000 miles

“Foul smell 5 days after purchase of new car, been into service 9 times deal does not know what to do replace cooling /heating vents and replaced with new.”

NHTSA complaint #10275140, filed 2009-06, 9 miles

“The contact owns a 2008 toyota Scion XB. The contact stated that the oil warning lamp illuminated. The vehicle was taken to a dealer who stated that there was a defect in the motor. As a result, the engine would have to be rebuilt. The manufacturer was made aware of the failure who did not offer any assistance. The vehicle was not repaired. The failure mileage was 57,000 and the current mileage was 60,000.”

NHTSA complaint #10456312, filed 2012-04, 57,000 miles

“The contact owns a 2008 toyota Scion XB. The contact stated that after taking the vehicle to the dealer for routine maintenance, the contact was advised that the pistons in the engine were not retaining oil as it should. The dealer made repairs to the piston assembly. The manufacturer was contacted and they offered to pay for the part and the contact would have to cover the labor costs. The failure mileage was approximately 70,000. Updated 02/03/12 updated 02/10/12”

NHTSA complaint #10440847, filed 2011-12, 70,000 miles

“The contact owns a 2008 toyota Scion. The contact stated when depressing the brakes, the brake pedal would fall into the floorboard and would feel spongy and soft. In addition, the vehicle was consuming large amounts of engine oil. The dealer was unable to duplicate or locate any failure within the vehicle. The manufacturer confirmed that the vehicle was operating as designed. The vehicle was not repaired. The failure mileage was 18,000 and the current mileage 46,000.”

NHTSA complaint #10329187, filed 2010-05, 18,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
201212%
201124%
201012%
200911%
200872%
200652%
200589%
200413%

Other parts of the 2008 Scion XB

Air bags
132 complaints
Visibility (wipers, defrost, mirrors)
46 complaints
Brakes
39 complaints
Steering
37 complaints
Engine
35 complaints
Electrical system
34 complaints
Electronic stability control
20 complaints
Vehicle speed control
15 complaints
Body and structure
11 complaints
Other or unknown
9 complaints
Wheels
9 complaints
Transmission and drivetrain
7 complaints

← All problems reported for the 2008 Scion XB

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology