How much HP does a 1991 Acura Integra have?
In 1991, horsepower varied by trim, with standard models delivering roughly 140 horsepower and the performance-focused GS-R trimming around 170 horsepower.
This article examines the 1991 Integra lineup in the United States, explains which engines and outputs applied to each trim, and notes any market variations or nuances that can affect the published figures.
Trims and horsepower in the US market
What to expect by trim
The following overview summarizes typical factory horsepower for the 1991 US Integra lineup. Engine designations refer to the era's common configurations and published specifications.
- Standard trims (including RS/LS): about 140–142 hp from the 1.8L inline-4 B18A1 engine
- GS-R: about 170 hp from the 1.8L inline-4 B18C1 engine
Note: Exact numbers can vary by model year refinements, market region, and drivetrain condition. Real-world output may differ from the factory rating due to wear, exhaust, and tuning.
Engine details and context
The Integra’s early-1990s performance depended on the engine family it used. Most standard US models employed the 1.8-liter B18A1 engine, typically rated around 140 hp, while the sport-oriented GS-R leveraged the higher-output B18C1 powerplant, rated at about 170 hp. Transmission gearing and other chassis components also shaped how horsepower translated to on-road performance.
Summary
For the 1991 Acura Integra, expect roughly 140–142 hp in standard trims and about 170 hp in the GS-R variant. Variations can occur by market and model year tweaks, so checking the specific vehicle’s documentation or VIN-based build sheet provides the most precise figure.
