What is the Infiniti QX80?
The QX80 is Infiniti’s full-size luxury SUV, built for people who want a roomy cabin and a high driving position. It sits at the top of the brand’s SUV range, carrying on the role of the QX56. Its size and emphasis on passenger space set it apart from Infiniti’s sedans and smaller crossovers.
QX80 generations
The Z62 generation ran from 2014 to 2024, continuing the large SUV formula established by the QX56. The QX56 name changed to QX80 for the 2014 model year. The Z63 arrived for 2025 with a redesigned body and a new engine: a 3.5-litre twin-turbo V6 replaced the previous 5.6-litre V8. The QX80 remains Infiniti’s flagship SUV.
Engines and fuel consumption
In the United States and Canada, the QX80 has petrol engines from 3.5 to 5.6 litres. The US EPA rates its best combined result at 18 MPG, with the lowest listed consumption at 13.1 L/100 km. In Canada, the lowest listed figure is 13.8 L/100 km on the 5-cycle test. EPA and Canadian 5-cycle procedures differ, so the figures are not directly equivalent.
Where was the QX80 sold?
The QX80 appears in US EPA figures for 2014–2027 and Canadian NRCan figures for 2014–2026. Its Z62 and Z63 generations trace its change from the earlier V8-powered SUV to the newer turbocharged V6.
Questions and answers
What replaced the Infiniti QX56?
The QX80 succeeded the QX56 as Infiniti’s full-size luxury SUV.
Which engines are listed for the QX80?
The US and Canadian figures cover petrol engines from 3.5 to 5.6 litres. The Z63 generation uses a 3.5-litre twin-turbo V6.
How economical is the Infiniti QX80?
The best combined US EPA figure is 18 MPG, with lowest listed consumption of 13.1 L/100 km. The lowest Canadian NRCan 5-cycle figure is 13.8 L/100 km.
