What is the Infiniti QX56?
The QX56 was Infiniti’s full-size luxury SUV, with a spacious cabin and a petrol V8. It sat at the top of the brand’s SUV range, offering a roomy alternative to its sedans and crossovers. The QX56 was also the first Infiniti model assembled in the United States. It later gave way to the QX80, which carried on its flagship SUV role.
QX56 generations
The first generation, code JA60, ran from 2004 to 2009. It established the QX56 as Infiniti’s large V8-powered SUV. The second generation, code Z62, followed from 2011 to 2013. It brought a redesigned vehicle and a direct-injection version of the 5.6-litre V8. The Z62 lineage continued under the QX80 name from 2014.
Engines and fuel consumption
The US and Canadian figures list the QX56 with a 5.6-litre petrol engine. The best combined US EPA result is 16 MPG, with lowest listed consumption of 14.7 L/100 km. In Canada, the lowest listed figure is 15 L/100 km on the NRCan 5-cycle test. EPA and Canadian 5-cycle procedures differ, so the results are not directly equivalent.
Where was the QX56 sold?
The QX56 appears in US EPA figures for 2004–2013 and Canadian NRCan figures for 2005–2013. Its two generations served both markets before the QX80 took over its place at the top of Infiniti’s SUV range.
Questions and answers
What engine did the Infiniti QX56 use?
The US and Canadian figures list a 5.6-litre petrol engine.
What replaced the QX56?
The QX80 succeeded it as Infiniti’s full-size flagship SUV.
How economical was the Infiniti QX56?
The best combined US EPA figure was 16 MPG, with lowest listed consumption of 14.7 L/100 km. Canada’s lowest NRCan 5-cycle figure was 15 L/100 km.

