2025 Civic Si Heated Seats. Someone posted last week that the new si would be getting heated seats, digital gauges and new wheels. To make your heated seats work, you'd likely have to splice the new seat harness into your existing body harness, or replace the entire body harness (which is super expensive.

Standard heated seats and optional summer tires return to the sporty si. To make your heated seats work, you’d likely have to splice the new seat harness into your existing body harness, or replace the entire body harness (which is super expensive.