The typical range is roughly 340 to 370 miles per full tank in mixed driving conditions, depending on transmission and how you drive.
The 2008 Scion xB uses a 2.4-liter engine and offered both a five-speed manual and a four-speed automatic. Federal EPA fuel-economy figures place the combined mileage in the mid-20s, so you can estimate range by multiplying a real-world mpg estimate by the tank size. Real-world results vary with load, terrain, and weather, but the numbers below give a solid baseline.
EPA fuel economy and tank size
To estimate how far you’ll get, it helps to know the EPA ratings by transmission and the fuel tank capacity. The following figures summarize the key numbers you’d use to calculate range.
- 2008 xB with four-speed automatic: 22 mpg city, 28 mpg highway, 24 mpg combined
- 2008 xB with five-speed manual: 23 mpg city, 29 mpg highway, 25 mpg combined
Using these values and an approximate tank size of 14.5 gallons, the expected range is about 348 miles with the automatic and about 363 miles with the manual on a full tank under mixed driving.
Real-world factors that affect range
Numbers above assume steady conditions. In daily use, several factors can push your actual range up or down.
Driving style
Gentle acceleration, moderate speeds, and smooth braking help maximize mpg, while aggressive driving reduces it quickly.
Vehicle load and conditions
More weight, cargo, or roof racks increase energy demand and reduce range. Proper tire inflation also matters.
Terrain and climate
Hills, cold weather, and the use of air conditioning can lower mpg and, therefore, the per-tank distance you can travel.
Summary
For a well-maintained 2008 Scion xB, expect roughly 340–370 miles per full tank in typical mixed driving. Real-world results vary by transmission choice, driving style, load, and conditions, but using the EPA-based figures provides a solid baseline for planning trips or daily commuting.