Infiniti QX55

Infiniti QX55: Which Version Should You Buy?

The Infiniti QX55 catalogue contains one generation and two versions, both named 2.0 i Turbo CVT. The key choice is therefore between the 249 hp 2.0 i Turbo CVT and the 268 hp 2.0 i Turbo CVT. Both are SUV 5-doors models with a 1,997 cc Gasoline engine, Variable gearbox and AWD, but the 268 hp version offers the stronger power-to-weight ratio and the only measured acceleration figure.

The Infiniti QX55 catalogue contains one generation and two versions, both named 2.0 i Turbo CVT. The key choice is therefore between the 249 hp 2.0 i Turbo CVT and the 268 hp 2.0 i Turbo CVT. Both are SUV 5-doors models with a 1,997 cc Gasoline engine, Variable gearbox and AWD, but the 268 hp version offers the stronger power-to-weight ratio and the only measured acceleration figure. The 249 hp version uses less fuel in the combined and highway figures provided and has a slightly larger tank. Price, reliability, engine problems and purchase listings are not included in the source data, so they cannot decide this comparison.

Infiniti QX55 generations and version choice

The Infiniti QX55 has one generation, which started in November 2020 and has no recorded end date. This generation uses an SUV 5-doors body and includes two versions. There is no separate restyling or later generation in the supplied catalogue, so comparisons involving Infiniti QX55 2022, 2023, 2024, 2025 or 2026 model years cannot be made from these data.

Both versions carry the exact database name 2.0 i Turbo CVT. To keep them distinct, this article identifies them by their rated output: 2.0 i Turbo CVT (249 hp) and 2.0 i Turbo CVT (268 hp).

Infiniti QX55 engine specs and horsepower

The two versions share the same basic engine specification. Each has a 1,997 cc Gasoline engine with 4 cylinders in an Inline layout, 4 valves per cylinder, Turbo boost and Direct injection (direct). The engine is mounted Front, transverse. Both versions produce 380 Nm at 4,400 rpm and reach their rated horsepower at 5,600 rpm.

The 268 hp version adds 19 hp and 14 kW without changing displacement or listed torque. Based on the supplied displacement, the 249 hp version develops about 124.7 hp per litre, while the 268 hp version develops about 134.2 hp per litre. That gives the 268 hp model an advantage of approximately 9.5 hp per litre.

The 249 hp version has a listed compression ratio of 8. The compression ratio for the 268 hp version is not measured. Both list an 84 × 90.1 bore-and-stroke figure and use 95 fuel. The emissions classification is Euro 5 for the 249 hp version and Euro 6 for the 268 hp version.

Infiniti QX55 performance and fuel economy

The 268 hp version has a top speed that is 5 km/h higher. It also has a measured 0–100 km/h time of 7.1 seconds, whereas acceleration for the 249 hp version is not measured. That missing result should not be interpreted as proof that the 249 hp version is slower by a particular amount.

City fuel consumption is identical at 10.7 L/100 km. The 249 hp version uses 0.8 L/100 km less on the highway and 0.7 L/100 km less in combined driving. Buyers prioritizing the catalogue’s lower consumption figures therefore have a clear reason to prefer the 249 hp model, while those prioritizing output and measured acceleration have a clearer case for the 268 hp model.

CO₂ output is not measured for either version.

Infiniti QX55 dimensions, weight and chassis specs

Overall exterior dimensions are not measured in the supplied data. Wheel sizes are also not measured for both versions.

The 268 hp version is only 3 kg heavier at kerb weight, yet it provides 19 hp more. The 249 hp model carries about 7.31 kg per horsepower, compared with about 6.81 kg per horsepower for the 268 hp model. On the given figures, the 268 hp version therefore has the better weight-to-power relationship.

Gross weight is 18 kg higher for the 268 hp version. Both have 218 mm of ground clearance, so neither gains an advantage in this listed measurement. The 249 hp version has a 61 L tank, which is 1 L larger than the 60 L tank in the 268 hp version.

Both versions use Independent, spring front and rear suspension. Ventilated disc brakes are listed at the front, while Disc ventilated brakes are listed at the rear.

Which Infiniti QX55 version should you buy?

Choose the 2.0 i Turbo CVT (249 hp) if lower recorded fuel consumption matters more than maximum output. It matches the 268 hp model’s 380 Nm torque, 10.7 L/100 km city consumption, AWD system and 218 mm clearance, while returning 7.6 L/100 km on the highway and 8.7 L/100 km combined. It is also 3 kg lighter and has a tank that is 1 L larger.

Choose the 2.0 i Turbo CVT (268 hp) if performance is the priority. Its extra 19 hp comes with only 3 kg of additional kerb weight, reducing weight per horsepower from about 7.31 kg to about 6.81 kg. It reaches a listed 225 km/h and has a measured 0–100 km/h time of 7.1 seconds. The trade-off is consumption of 8.4 L/100 km on the highway and 9.4 L/100 km combined.

The 268 hp version is the stronger numerical choice for performance, while the 249 hp version is the more economical choice in the supplied highway and combined figures. Whether the performance gain justifies extra money cannot be assessed because Infiniti QX55 prices are not provided. Likewise, Infiniti QX55 reliability, engine problems, recalls, maintenance requirements and vehicles for sale are outside the available data and should not be inferred from these specifications.