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What is the difference between a Subaru Impreza and a WRX STI?

Author

Christopher Anderson

Published Mar 01, 2026

What is the difference between a Subaru Impreza and a WRX STI?

The Subaru Impreza WRX has an STI version that was created to provide a sporty alternative to the WRX. Although there are quite a number of differences between the WRX and the STI, let’s look at the most important. Despite having the same 2.5L engine, the STI is capable of producing a lot more power than the WRX.

What are common problems with Subaru Impreza?

Most Common Subaru Impreza Problems. Sometimes the check engine light illuminates because the computer detects misfires. subaru released an improved spark… The front oxygen (air fuel ratio) sensor element may develop a crack, causing the check engine light to illuminate.

What does WRX stand for on Subaru?

Subaru adopted the name “WRX” to stand for ” World Rally eXperimental” (in some places WRX stands for “World Rally Cross”) as all WRX versions (1992 to present) feature rally inspired technology, including all wheel drive, stiffened suspensions and turbocharged four cylinder engines.

What does STI mean in Subaru WRX STI?

STI stands for “Subaru Tecnica International“. It’s basically a better Subaru WRX with performance-tuned engines, transmissions, and suspensions. STI is the division of Fuji Heavy Industry’s that specializes in motorsports. This is the team that worked with Prodrive to develop the first Impreza WRX in the early 1990s.

What is the Subaru 22B WRX STI?

In 1998, Subaru of Japan produced a widebody, coupe WRX STi called the “22B STi” produced between March and August 1998. The 22B was used to commemorate both Subaru’s 40th anniversary as well as the third consecutive manufacturer’s title for Subaru in the FIA World Rally Championship .

What engine does the Subaru Impreza WRX STi have?

WRX trims feature a 265-hp turbocharged 2.5-liter horizontally opposed four-cylinder engine paired with a five-speed manual transmission. The STI’s turbocharged 2.5-liter horizontally opposed…