Headlining the minor refresh are the aforementioned engine upgrades, along with a new top-spec M140i variant replacing the previous M135i.
First in the updated range is the 120i, which is fitted with a new 2.0-litre turbocharged four-cylinder petrol engine (up from 1.6 litres), producing 135kW of power and 270Nm of torque, up 5kW and 20Nm respectively.
The new powerplant helps the 120i cut 0.1 seconds off its claimed 0-100km/h sprint time to 7.1 seconds. Fuel consumption is rated at 5.8L/100km.
Priced from $41,900 plus on-roads, standard features in the 120i include the Sport Line package, reversing camera, dual-zone climate control, satellite navigation with ConnectedDrive real-time traffic updates, 17-inch alloy wheels and an eight-speed automatic transmission. A six-speed manual shifter is available as a no-cost option.
Stepping up to the 125i adds a $7000 premium ($48,900 plus on-roads), which brings a more powerful version of the 2.0-litre turbo four to the party.
Producing 165kW and 310Nm, the 125i is 5kW up on its predecessor, and is 0.1 seconds quicker from 0-100km/h, which is now achieved in 6.1 seconds.
A more significant update can be seen in fuel-consumption, with BMW claiming a 0.6L/100km improvement to 5.9L/100km for the new 125i.
Standard equipment on the 125i includes 18-inch M light alloy wheels, anti-dazzle folding exterior mirrors, front- and rear- parking sensors, variable steering along with cloth/Alcantara upholstery.
At the top of the 1 Series range is the new M140i, which is priced from $64,900 plus on-road costs.
The M140i features a redesigned 3.0-litre turbocharged six-cylinder engine, producing a meaty 250kW of power and 500Nm of torque, a 10kW/50Nm bump from the old M135i.
0-100km/h takes just 4.6 seconds (down from 4.9 seconds), while BMW claims a 7.1L/100km fuel consumption figure, down 0.4L/100km from the M135i.
Adding to the performance and efficiency improvements, the M140i also receives some added specification over its predecessor, including comfort access, 12-speaker harmon/kardon sound system, along with electrically-adjustable leather-trimmed front seats with heating and lumbar support.
The M140i retains the adaptive M suspension, adaptive LED headlights, professional navigation and DAB+ digital radio that were already standard on the 1 Series flagship.
Like the rest of the BMW range, the 1 Series is covered by the company’s Condition Based Servicing (CBS) schedule, which relies on sensors and algorithms to determine when the vehicle requires maintenance.
The updated 2017 BMW 1 Series range will be available in the fourth quarter of this year.
M240i due in fourth quarter
BMW has also confirmed that the new M240i coupe and convertible, revealed in May, will make its Australian debut in the fourth quarter of this year. Pricing is still to be confirmed.
2017 BMW 1 Series pricing (plus on-road costs):
- 118i - $36,900
- 118d - $40,300
- 120i - $41,900
- 125i - $48,900
- M140i - $64,900