Customers in various markets will soon be able to opt for a new ‘Dualjet’ (twin fuel injectors) version of the existing 1.2 litre four-cylinder engine, improving fuel consumption by 16 percent.
The current 1.2 litre unit in the UK produces 69kW and 118Nm while returning a fuel figure of 5.0 l/100km on the UK testing cycle in the manual-equipped three- and five-door models.
That already-low fuel figure becomes just 4.2 l/100km with the new Dualjet engine (down 0.8 l/100km) while power and torque are altered slightly to 66kW/120Nm.
Suzuki has also broken through the 100g/km-barrier with its new Dualjet engine - albeit only just - with an official CO2 output of 99g/km.
This means no Vehicle Excise Duty for UK customers, which Suzuki claims is worth £175 (AU$308) per year in savings to a customer travelling the average annual distance.
The new engine is accompanied by altered gear ratios and a stop/start system, which are also partly responsible for the improved economy.
Don't expect this new mill in Australia anytime soon, however.
Speaking with TMR today, Suzuki Australia General Manager, Andrew Moore, confirmed the local arm will be sticking with its current 1.4 and 1.6 litre petrol engines.
By comparison, Australian customers choosing the entry-level 1.4 litre four-cylinder unit get 70kW and 130Nm, with a fuel figure of 5.5 l/100km in the manual and 6.2 l/100km with the automatic.
Both Australian and UK customers can also upgrade to the Swift Sport; fitted with a larger 1.6 litre engine producing 100kW and 160Nm while returning 6.5 l/100km in the six-speed manual version.
The new Dualjet engine as an option is expected to cost £500 (AU$881), and will only be available with front-wheel-drive models.
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