Both the 2026 Acura Integra and the Honda Civic Si share the same 1.5-liter turbocharged engine tuned to 200 horsepower and 192 lb-ft of torque, so they feel closely matched off the line. The difference is choice: the Civic Si is offered only with a six-speed manual, while the Integra lets you pick an efficient CVT or the available six-speed manual, and it goes further with the available 320-horsepower Integra Type S for drivers who want serious performance.

Inside, the 2026 Acura Integra and the Civic Si both start with a 9-inch touchscreen and standard wireless Apple CarPlay and Android Auto. The Integra leans more premium, offering a 10.2-inch digital instrument cluster, an available 16-speaker ELS Studio 3D audio system, and an available head-up display, while the Civic Si counters with a standard Bose 12-speaker premium sound system.

Safety technology comes standard on both cars. The 2026 Acura Integra includes the AcuraWatch suite, while the Civic Si comes with Honda Sensing. Both bundle collision-mitigation braking, adaptive cruise control, and lane keeping assistance, so you get a strong set of standard driver aids no matter which one you choose.

The biggest practical difference is body style. The 2026 Acura Integra is a four-door liftback with 24.3 cubic feet of cargo space behind the rear seats and a wide hatch opening, while the Civic Si is a traditional sedan with a 14.1-cubic-foot trunk. Both seat five, but the Integra's upscale, versatile cabin gives it an edge for drivers who haul gear as often as passengers.

Styling sets the tone for each car's personality. The 2026 Acura Integra wears a sleek five-door liftback design with Jewel Eye LED lighting and available Type S styling, while the Civic Si leans into sport-sedan looks with a body kit, gloss-black accents, and 18-inch wheels. Both ride on 18-inch alloys, but the Integra offers the more premium, more flexible shape.