An Opel Astra GTC variant powered by a new 1.6-litre turbo petrol engine promising more torque and improved efficiency is set to arrive in Australia next month.

Following the engine’s debut in the Opel Cascada, Opel has announced the all-new 1.6-litre four-cylinder SIDI (spark ignition direct injection) Turbo engine will now power the front wheels of the three-door Opel Astra GTC hatchback.

Producing 125kW of power between 4250-6000rpm and 280Nm of torque between 1650-4250rpm (the latter with an overboost function), the 1.6 SIDI Turbo is claimed to deliver a 15 per cent improvement in fuel consumption and CO2 emissions over its identically sized predecessor.

Opel 1.6 SIDI Turbo

While the current 132kW/230Nm turbocharged 1.6-litre unit returns figures of 7.3 litres per 100km andCOemissions of 171 grams per kilometre under the New European Driving Cycle, the new engine claims 6.1L/100km and 143g/km CO2.

Performance of the 1.6 SIDI Turbo-powered GTC is down slightly from the existing $34,990 GTC Sport model, however, with its 0-100km/h time of 8.6 seconds and a 219km/h top speed coming up just short of the old car’s 8.3-second and 220km/h ability.

Opel Australia’s Michelle Lang told CarAdvice that Opel Astra GTC Sport models powered by the new 1.6-litre engine were expected to start arriving in mid July, but would not confirm to what degree prices would be affected as a consequence of the update.

The new engine was initially revealed in April, along with plans for a new eight-speed automatic transmission.




  • $29896495

    So it comes down to pollution. 30grams….

    • JoeR_AUS

      and 1.3l per 100km or 15% better economy

  • JoeR_AUS

    Opel has a choice with the GTC as there are two engines:

    The efficiency focused Eco Turbo produces 125kW of power (between 4250-6000rpm) and 280Nm of torque (1650-4250rpm), while the sportier Performance Turbo ups the totals to 147kW (4700-5500rpm) and 300Nm (1750-4700rpm) respectively.

  • Phil

    New engine won’t fix the real problem, which is the GTC is just too heavy. 0-100 in 8.6sec, barely ahead of a 1.6 Kia Rio or Polo 77TSI.

    When the Beach Boys wrote the song “No Go Showboat”, it may as well have been about the GTC…

    • $29896495

      It is an issue. The Astra is a full size car now, and this Euro insistence of going for the smallest capacity possible just doesn’t work. I worry about the longevity of these engines when you have to work them really hard day to day. You’d think if they are going to go this rout with a car this size 1.8 would be the minimum (even that is really too small).

      • shgh

        Bigger and Heavier Insignia/Vectra and Mondeo are fitted with 1.6 engines WITHOUT a turbo in some countries and have far less power then this particular 1.6. They’re shifting about 1500kgs with only 85KWs and have done for basically decades with no issues found that are related to having to “work hard”.

        It’s the design, strength and maintenance of the engine that mainly defines the longevity not whether it has to work hard.
        Trucks, buses, boats and aircraft engines pretty much all run at full power for their entire lives regardless of their respective power to weight ratio.

        • $29896495

          You miss the point totally. Earlier cars were much smaller, current cars all run turbos, to move essentially large cars. End result to make them move you have to work them.

          • agfg

            You didn’t even read my comment.

            What earlier cars? I mentioned the Insignia as a example of a much bigger car than the Opel Astra but with a 1.6 engine. There is no “Earlier” Opel Insignia – they’ve only made one and again, it’s bigger and heavier than the CURRENT Astra – and it’s been made with 1.6 engine without a turbo yet there are no longevity complaints related to having to “work them”. The CURRENT Mondeo and the last Vectra are also bigger and heavier than the CURRENT Astra and have also been made with non turbo 1.6 engines (around 85KW) and similarly, there are no longevity complaints related to having to “work them” – and they’d be working far harder than this 125KW Astra.

            I’ve never heard of any engines wearing out prematurely because they had to “work hard”. Engineers design a engine according to it’s expected purpose, so boat engines for examples that run at full power most of the time, will be designed and strengthened to operate for many years as such. Similarly, car engine such as a small engine in a heavy car will be expected to “work hard” and as such will be designed and made to a appropriate strength. Failure to do so is poor design/built not the fact that it had to “work hard”.

    • JoeR_AUS

      only if you live by 0-100 but then none of these cars are note worthy

    • Zaccy16

      i agree, the gtc looks fantastic and steers well but without a better engine it is too slow for the price and target class, sounds abit like the proceed!!

  • Pauly

    So will the Holden Cruise get the same engine?

    • 42 = The Answer

      In theory if they retire the existing Ecotec 1.6LT it should make its way into the Cruze however if they’re going to continue production then probably not. The extra torque would be even more welcome

  • Aus_poppa

    It has to be remembered that in Europe pretty much all vehicle taxation is linked to CO2. Anything higher than 150gm/km costs more to register initially, then more for annual registration, and in the UK exposes a compny car user to higher personal tax – yes, the equivalent of FBT is paid by the employee, not the employer. So evry little lowering of CO2 makes a car more affordable, and more saleable.