Infiniti QX80 specs: what actually changes between versions
Every 5.6 AT in this catalogue is 405 hp and 560 Nm, Gasoline, V-shaped 8 cylinders, 4 valves per cylinder, boost No, Automatic 7, fuel 95, tank 100 L where measured, top speed 210. The split is AWD versus RWD, then the 2017-11-01 second restyling of generation 1, then generation 2’s 3.5 AT.
Every 5.6 AT in this catalogue is 405 hp and 560 Nm, Gasoline, V-shaped 8 cylinders, 4 valves per cylinder, boost No, Automatic 7, fuel 95, tank 100 L where measured, top speed 210. The split is AWD versus RWD, then the 2017-11-01 second restyling of generation 1, then generation 2’s 3.5 AT.
| Version (exact name) | Years | Drive | hp / kW | Nm | Displacement, cm³ | 0–100 | Mixed L/100 km | Kerb, kg |
|---|---|---|---|---|---|---|---|---|
| 5.6 AT AWD, gen. 1 | 2013-11-01–2014-11-30 | AWD | 405 / 298 | 560 | 5552 | 6.5 | 14.5 | 2800 |
| 5.6 AT RWD, gen. 1 | 2013-11-01–2014-11-30 | RWD | 405 / 297 | 560 | 5552 | 6.5 | 14.5 | 2654 |
| 5.6 AT AWD, gen. 1 restyling | 2014-12-01–2018-04-30 | AWD | 405 / 298 | 560 | 5552 | 6.5 | 14.5 | 2800 |
| 5.6 AT RWD, gen. 1 restyling | 2014-12-01–2018-04-30 | RWD | 405 / 298 | 560 | 5552 | 6.5 | 14.5 | 2654 |
| 5.6 AT AWD, gen. 1 restyling 2 | 2017-11-01–2023-12-31 | AWD | 405 / 298 | 560 | 5552 | 7.5 | 14.5 | 2817 |
| 5.6 AT RWD, gen. 1 restyling 2 | 2017-11-01–2023-12-31 | RWD | 405 / 298 | 560 | 5552 | 7.5 | 14.7 | 2560 |
| 3.5 AT AWD, gen. 2 | 2024-03-01– (stop not measured) | AWD | 456 / 335 | 698 | not measured | not measured | not measured | not measured |
Power per litre on every 5.6 AT with 5552 cm³: 405 ÷ 5.552 ≈ 72.9 hp/L. Generation 2 3.5 AT displacement is not measured, so power per litre is not measured.
Infiniti QX80 engine: 5.6 AT V8 versus 3.5 AT
5.6 AT (all six listings): 5552 cm³, 8 V-shaped, boost No, direct injection (direct), 560 Nm at 4000. Compression is 11.5 on generation 1 AWD (original and first restyling) and 10.8 on restyling 2 — 0.7 lower. Bore × stroke 98 × 92 is measured on those AWD and restyling-2 cars; on early 5.6 AT RWD it is not measured. Engine position Front, longitudinal where measured; on both early 5.6 AT RWD listings it is not measured.
The only engine option in this catalogue besides 5.6 AT is generation 2 3.5 AT: 456 hp (+51 hp versus 405), 335 kW (+37 kW versus 298), 698 Nm (+138 Nm versus 560). Cylinders, layout, boost, injection, displacement, fuel grade, 0–100, top speed: not measured. Gearbox is Automatic 9 versus 7 on every 5.6 AT (+2 ratios). Drive is AWD only — no RWD 3.5 AT in the data.
Horsepower 2015 / 2017 / 2019 / 2021 in this set is always 405 on 5.6 AT. Horsepower 2024–2026 in this set is 456 on 3.5 AT. There is no second horsepower figure for generation 2.
Infiniti QX80 0–100 and mpg: restyling 2 is slower, RWD restyling 2 is the only city-economy outlier
0–100. Generation 1 original and first restyling: 6.5 s on both AWD and RWD 5.6 AT. Restyling 2: 7.5 s on both drives — +1.0 s. Generation 2 3.5 AT: not measured (so 0–60 from this catalogue is not measured for 2024+).
Top speed: 210 on every 5.6 AT; 3.5 AT not measured.
Fuel (L/100 km). Five of six 5.6 AT share 20.6 / 11.0 / 14.5 (city / highway / mixed). The exception is restyling 2 5.6 AT RWD: 16.8 / 11.8 / 14.7. Versus restyling 2 AWD: city −3.8, highway +0.8, mixed +0.2. Versus every earlier 5.6 AT: city −3.8, highway +0.8, mixed +0.2. Generation 2 3.5 AT: city, highway, mixed all not measured.
CO₂ / eco. Generation 1 AWD (original and restyling): 373 g, Euro 4. Restyling 2 AWD: CO₂ not measured, Euro 5. All RWD 5.6 AT and 3.5 AT: eco class not measured, CO₂ not measured.
Infiniti QX80 dimensions: weight per horsepower and clearance
Weight per horsepower (kerb ÷ 405), 5.6 AT only:
- Restyling 2 RWD: 2560 / 405 ≈ 6.32 kg/hp (lightest)
- Generation 1 RWD (both blocks): 2654 / 405 ≈ 6.55 kg/hp
- Generation 1 AWD (both blocks): 2800 / 405 ≈ 6.91 kg/hp
- Restyling 2 AWD: 2817 / 405 ≈ 6.96 kg/hp (heaviest)
AWD penalty versus RWD: generation 1 +146 kg (2800 − 2654). Restyling 2 +257 kg (2817 − 2560) — the AWD gap widened by 111 kg. Restyling 2 AWD is +17 kg versus generation 1 AWD; restyling 2 RWD is −94 kg versus generation 1 RWD.
Gross: generation 1 AWD 3450; restyling 2 AWD 3400 (−50); restyling 2 RWD 3311; generation 1 RWD and 3.5 AT not measured.
Ground clearance. Generation 1 RWD: 261 mm (highest). Generation 1 AWD: 257 mm (−4). Restyling 2 both drives: 234 mm (−23 versus AWD, −27 versus RWD). 3.5 AT: not measured.
Wheels. Restyling 2 5.6 AT (AWD and RWD): 275/60 R20 and 275/50 R22. All earlier 5.6 AT and 3.5 AT: not measured.
Tank: 100 L on every 5.6 AT; 3.5 AT not measured.
Suspension. Generation 1 AWD (original and restyling): front Independent, spring; rear Independent, pneumatic. Generation 1 RWD and restyling 2 both drives: Independent, spring front and rear. Generation 2 3.5 AT: Independent, pneumatic front and rear — the only version with pneumatic on both axles. Brakes all versions: Ventilated disc front, Disc ventilated rear.
Body is SUV 5-doors on every block.
Infiniti QX80 reliability and which version to buy
This catalogue has no reliability, knock, oil-type, air-filter, or engine-replacement-cost figures. Those searches cannot be answered from the data. What can be chosen is the arithmetic.
Choose restyling 2 5.6 AT RWD (2017-11-01–2023-12-31) if city fuel and mass matter most. It is the only 5.6 AT with 16.8 city, the lowest kerb 2560 kg, and the best 6.32 kg/hp. Cost versus AWD sibling: −257 kg, −3.8 city L/100 km, same 405 hp / 560 Nm / 7.5 s / 210. Trade-offs: mixed 14.7 versus 14.5, highway 11.8 versus 11.0, drive RWD not AWD, eco not measured, clearance 234 not 261.
Choose restyling 2 5.6 AT AWD if you want the later 5.6 AT with AWD, Euro 5, and listed wheels 275/60 R20 / 275/50 R22. Same 7.5 s and 405 hp as the RWD twin; you pay 257 kg and 3.8 city litres. Compression 10.8 (not 11.5). Rear spring, not pneumatic.
Choose generation 1 5.6 AT AWD (2013-11-01–2014-11-30 or 2014-12-01–2018-04-30) if 6.5 s and 257 mm and rear Independent, pneumatic matter more than Euro 5. Specs of original AWD and first-restyling AWD match in this catalogue: 405 / 298, 560, 5552, 11.5, 6.5, 210, 20.6 / 11 / 14.5, 2800 / 3450, 373 CO₂, Euro 4. The first restyling does not change the measured AWD numbers; it only extends production through 2018-04-30. Overlap with restyling 2 starts 2017-11-01.
Choose generation 1 5.6 AT RWD if you want 6.5 s and 261 mm without AWD mass. Kerb 2654 (146 kg under AWD). Note the original RWD listing is 297 kW, not 298; rpm, engine position, compression, bore × stroke, gross mass: not measured. First-restyling RWD fills kW to 298 but still leaves those fields not measured. Fuel figures are the same 20.6 / 11 / 14.5 as AWD — unlike restyling 2, RWD here does not cut city consumption.
Do not treat original versus first restyling as two cars on AWD: the AWD 5.6 AT rows are identical in every measured field. The restyling is a date window, not a spec jump.
Choose generation 2 3.5 AT (from 2024-03-01) only if +51 hp, +138 Nm, Automatic 9, AWD, and pneumatic front and rear are the priority. You cannot verify 0–100, top speed, L/100 km, mass, clearance, tank, wheels, engine size, or cylinders from this catalogue — all not measured. There is no RWD 3.5 AT. “2025 / 2026 specs” in this dataset are this same 3.5 AT row.
If the extra money is for AWD: on generation 1 it buys 146 kg, −4 mm clearance versus RWD, same 6.5 s and same fuel. On restyling 2 it buys 257 kg, Euro 5 (AWD only), −3.8 worse city than RWD, same 7.5 s. If the extra money is for generation 2: it buys 51 hp and 138 Nm and two extra gears; acceleration and mpg are not measured, so that purchase is not a proven 0–100 or economy upgrade in these numbers.
Short order by the numbers. Fastest measured: any generation 1 5.6 AT at 6.5 s. Lightest / lowest city fuel: restyling 2 5.6 AT RWD. Highest clearance: generation 1 5.6 AT RWD 261 mm. Most power and torque: 3.5 AT 456 hp / 698 Nm. Most complete later 5.6 AT AWD package (Euro 5, wheels listed): restyling 2 5.6 AT AWD.