The horsepower of a Honda B18 depends on the exact variant and market. In general, early non‑VTEC B18 engines sit around 140 hp, while the higher‑rpm Type R variants push toward 195–200 hp.
The Honda B18 family comprises 1.8-liter, DOHC engines used in Integra and Acura models from the 1990s into the early 2000s. Power output varies with tuning, year, and regional specifications, so exact figures must be checked for a specific engine code and build date.
Common B18 horsepower by variant
The following summarizes typical horsepower figures for the best‑known B18 variants in everyday use. Values are approximate and can differ by market and measurement method.
- B18A1/B18B1: roughly 140–142 hp
- B18C1 (GS‑R): about 170 hp
These figures reflect the early, non‑VTEC and then VTEC variants that powered base and sport trims in the 1990s. Differences in emission controls and dyno testing can yield small discrepancies between sources.
More performance‑oriented B18 variants include the Integra Type R models, which deliver higher horsepower in stock form.
- B18C5 (US Integra Type R, 1997–2001): ~195 hp
- B18C (JDM/DC2 Integra Type R variants, market dependent): ~200 hp (around 197–200 hp depending on market and measurement method)
Note that horsepower figures can be reported using different standards (SAE net, DIN, or other rating systems) and can vary with year, market, and whether the engine is stock or tuned. The B18’s range reflects a shift from 140 hp in early models to nearly 200 hp in Type R variants.
Why horsepower numbers vary
Power ratings differ due to market tuning, regulatory requirements, and the switch from older, SAE gross methods to SAE net horsepower. In addition, VTEC versions (B18C) provide higher peak power at high RPMs, while non‑VTEC B18s are tuned for broad, everyday drivability.
Summary
In short, the Honda B18’s horsepower spans roughly 140–195–200 hp, depending on the variant and market. Early non‑VTEC B18A/B18B engines sit near 140 hp, the B18C1 GS‑R around 170 hp, and the Integra Type R variants (US and JDM) near 195–200 hp. Always check the exact engine code and year to confirm the official figure for a specific car.