2016 Mazda CX-9 revealed | video

Mazda's all-new seven-seat CX-9 family SUV unveiled at LA Motor Show.

The second-generation Mazda CX-9 family SUV has been unveiled ahead of its showroom arrival in Australia in June next year.

The V6 engine is gone, replaced by an all-new 2.5-litre turbo four-cylinder petrol that promises to cut fuel bills by up to 20 per cent.

The arrival of the all-new, sleek-looking Mazda CX-9 completes the company's design makeover. All Mazda passenger cars now wear the Japanese company's bold new look.

The new CX-9 may appear smaller in photos than the current model but it is in fact wider, longer and slightly lower than the original launched in 2007.

The new-from-the ground-up design is also slightly roomier than before; Mazda has stretched the middle of the CX-9 to make it easier for kids to access the third-row seats.

The new CX-9 will have five child seat anchor points

Mazda says cargo space is unchanged (the roof is lower but the cargo bay is wider, to make up the difference).

Unlike most SUVs in this class, the new CX-9 will have five child seat anchor points -- one in each of the three positions in the second row, and one each for the third-row pews.

It means families can in theory have five child seats fitted at once (if the seats are narrow enough) or fit three child restraints (two in the second row and one in the third row) with room to spare.

While curtain airbag coverage extends to the very last row of seats, there are still no air-conditioning vents back there (only the first two rows get A/C ventilation).

The new CX-9 promises new levels of fuel efficiency, even though Mazda's last turbo four-cylinder SUV, the previous generation CX-7, was roundly criticised for its thirst.

The new 2.5 turbo petrol engine delivers diesel-like levels of torque

Mazda says the new CX-9 has adopted engine technology that will deliver genuine improvements in real-world fuel economy, not just the rating label.

Meanwhile Mazda has also ruled out a diesel version of the new CX-9 -- even though diesel represents about half the family-sized SUV market -- because the new 2.5 turbo petrol engine delivers diesel-like levels of torque (420Nm) at low revs, typical of city and suburban use, and similar fuel economy.

Fuel consumption figures are due to be published closer to the CX-9's on-sale date.

Mazda unveiled the CX-9 at the LA Motor Show as the US accounts for four out of every five sold; Australia is the second biggest market.