Yes. Across its two generations, the Scion xB used Toyota-designed engines: the first generation relied on a 1.5-liter 1NZ-FE, while the second generation switched to a 2.4-liter 2AZ-FE. The Scion brand itself was folded into Toyota in 2016, and the xB ended production in 2015. In short, Toyota engines power the xB throughout its production run.
Engine lineup by generation
Understanding which engines were used helps explain performance and maintenance expectations for each model year.
- First generation (2004–2006/2007): 1.5-liter inline-four 1NZ-FE engine; typically paired with a 5-speed manual or 4-speed automatic transmission.
- Second generation (2007–2015): 2.4-liter inline-four 2AZ-FE engine; typically paired with a 5-speed manual or 4-speed automatic transmission.
These two generations show the evolution from a compact, economy-focused powerplant to a larger, more powerful Toyota engine family, while keeping the xB's practical, roomy character.
Maintenance and parts considerations
Because both engines are Toyota designs, parts availability and service procedures are broadly aligned with other Toyota models. The 1NZ-FE is known for its simplicity and reliability, while the 2AZ-FE adds more power but can require more attention for timing chains, emissions systems, and related components as the vehicle ages.
Transmission and drivetrain notes
During its production, the xB offered several transmission options that affected acceleration, fuel economy, and maintenance needs. Buyers should verify the specific configuration on any used vehicle to anticipate service requirements and part availability.
What this means for owners and buyers
For prospective buyers, the key takeaway is that engine powertrains in the xB are Toyota-based, which generally supports broad parts availability and familiar maintenance practices. The 1NZ-FE-equipped first generation is lighter and typically more economical, while the 2AZ-FE-equipped second generation delivers more torque and driving power, with corresponding maintenance considerations as the vehicle ages.
Summary
The Scion xB is powered by Toyota engines across its two generations: the first generation used the 1.5L 1NZ-FE, and the second generation used the 2.4L 2AZ-FE. This link to Toyota engineering contributes to accessibility of parts and service, even as Scion as a brand was discontinued. For used-car shoppers, engine identification is straightforward and aligned with Toyota maintenance practices.
Are scions just as reliable as Toyotas?
As a division of Toyota, Scion cars are generally considered reliable.
What are the bad years for Scion xB?
While the Scion xB generally fares well in reliability, it's essential to be mindful of its problematic years - particularly 2006, 2008, and 2009. As with any used vehicle, a thorough pre-purchase inspection by a trusted mechanic is highly recommended.
Are scions cheap to repair?
Scions cost around $300 to $600 a year to maintain, well below the national average.
Is Scion basically a Toyota?
Toyota abolished the Scion brand at the start of the 2017 model year in August 2016; the vehicles were either rebranded as Toyotas or discontinued.