The Swift’s engine line-up is entirely petrol-fired and starts with the four-cylinder 1.2-litre Dualjet. This is the only option on base SZ3 models and while it may not be the strongest engine, it should be more than adequate for the urban cut and thrust. Unusually for a supermini, you can also get this engine with 4WD, although it does hurt performance noticeably, with longer up hill sections requiring you to select a lower gear.
Next up is the 109bhp 1.0-litre Boosterjet that comes with SZ-T trim. This little turbocharged three-cylinder engine isn’t as efficient as the 1.2 but it is much peppier. It’s also the only engine that is available with an automatic gearbox, although you’ll need top-spec SZ5 trim for that. The automatic gearbox is relatively slick and responds well to inputs from the pull paddles on the back of the steering wheel.
Finally, manual SZ5 Swifts come with the Boosterjet engine but with the addition of a mild hybrid system labelled SHVS (Smart Hybrid Vehicle by Suzuki). This adds a small battery and a combined motor/generator unit that’s able to recover energy when you decelerate and increase pulling power from low engine speeds.
While you can’t run on electric power alone like some hybrids, this system does make the engine feel like a far bigger unit. You really don’t have to rev the motor hard to get it to pull you up to speed. It also improves economy and emissions.