| Best role | Lightest, most balanced turbo 4-cyl manual FWD hot compact | Turbo 4-cyl automatic AWD with the most power and a luxury cabin | 300-hp 3-cyl turbo manual AWD hot hatch built for track days |
| Engine | 1.5L turbo 4-cyl (honda.ca) | 2.5L turbo Skyactiv-G 4-cyl, requires premium fuel (mazda.ca) | 1.6L turbo 3-cyl G16E-GTS, requires premium fuel (toyota.ca) |
| Power / torque | 200 hp @ 6,600 rpm / 192 lb-ft @ 1,800-5,000 rpm (honda.ca) | 250 hp on premium fuel / 320 lb-ft on premium fuel (mazda.ca) — fuel-premium requirement is real | 300 hp @ 6,500 rpm / 273 lb-ft @ 3,000-5,500 rpm (toyota.ca) |
| Transmission | 6-speed MANUAL only (no automatic on Si) | 6-speed automatic only (no manual option on Turbo trim) | 6-speed intelligent Manual Transmission (iMT) only |
| Drivetrain | FWD (front-wheel drive) only | i-Activ AWD standard | GR-FOUR AWD with 3-mode drive mode select (front / normal / track) |
| Fuel (premium recommended for all three) | Premium recommended for max power; regular is fine (honda.ca) | Premium REQUIRED for advertised 250 hp / 320 lb-ft (mazda.ca) | Premium REQUIRED (toyota.ca) |
| 0-100 km/h (manufacturer est.) | About 6.5 s (honda.ca) | About 5.5-5.6 s (mazda.ca) | About 5.0 s (toyota.ca) — fastest of the three |
| Curb weight | About 1,390 kg (honda.ca) — lightest | About 1,545 kg (mazda.ca) | About 1,475 kg (toyota.ca) |
| Practicality (seats, cargo) | Si sedan: 5 passengers, 416 L trunk. Si Hatchback adds hatch cargo flexibility. | Mazda3 Turbo sedan or hatch — 5 passengers, hatch is more practical | GR Corolla: 5 passengers, hatch only — smallest cargo behind rear seats |
| Built where | Honda Civic Si is built at Honda of Canada Manufacturing in Alliston, Ontario (hondacanadamfg.ca — Plant 1). Si is sourced from the same Alliston line as Civic Sedan / Si sedan. | Mazda3 is built at Mazda's Hiroshima, Japan plant for the Canadian market (mazda.ca) | Toyota GR Corolla is built at Toyota's Motomachi plant in Japan — imported to Canada (toyota.ca) |
| Long-term reliability signal | Excellent — manual transmission plus Honda engineering makes Civic Si one of the most reliable enthusiast cars on the market | Strong — Mazda reliability has been at or near the top of mainstream in Consumer Reports for several years | Newer platform — Toyota's recent GR cars have been broadly reliable in owner forums; warranty is the standard 3 yr / 60,000 km + 5 yr / 100,000 km powertrain |
| Who should test-drive it first? | Buyers who want the cheapest, lightest, most balanced turbo manual hot compact | Buyers who want the most power with an automatic and standard AWD for daily winter | Buyers who want the most power, AWD, and a manual transmission in the most track-focused chassis |