Rolls-Royce Cullinan

Rolls-Royce Cullinan: Which Version Should You Buy?

The Rolls-Royce Cullinan choice comes down to two outputs of the same 6.8 AT powertrain: 571 hp and 850 Nm, or 600 hp and 900 Nm. Both are Gasoline, turbocharged, V-shaped 12-cylinder versions with a 6,749 cm³ engine, an Automatic gearbox with 8 gears, and AWD. The 600 hp version is the performance choice: it reaches 100 km/h in 4.9 seconds and uses slightly less fuel in the listed tests.

The Rolls-Royce Cullinan choice comes down to two outputs of the same 6.8 AT powertrain: 571 hp and 850 Nm, or 600 hp and 900 Nm. Both are Gasoline, turbocharged, V-shaped 12-cylinder versions with a 6,749 cm³ engine, an Automatic gearbox with 8 gears, and AWD. The 600 hp version is the performance choice: it reaches 100 km/h in 4.9 seconds and uses slightly less fuel in the listed tests. The 571 hp version reaches 100 km/h in 5.2 seconds but has the same 250 km/h top speed. The first generation ran from May 2018 through May 2024, while its restyling has been in production since June 2024. The mechanical figures supplied for comparable pre-restyling and restyled versions do not show a performance, consumption, or weight change.

Rolls-Royce Cullinan generations: what changed?

The Rolls-Royce Cullinan has one generation represented in two production phases, both using the SUV 5-doors body.

The original first-generation Cullinan was produced from May 2018 through May 2024. It offered two versions, both named 6.8 AT: one with 571 hp and another with 600 hp. Their shared specifications include a 6,749 cm³ Gasoline engine, 12 cylinders in a V-shaped layout, Turbo boost, direct injection, an Automatic gearbox with 8 gears, and AWD.

The first-generation restyling entered production in June 2024 and remains in production according to the supplied data. It also has two 6.8 AT versions, rated at 571 hp and 600 hp. The body remains SUV 5-doors, and the listed output, acceleration, top speed, fuel-consumption, emissions, suspension, braking, and kerb-weight figures match those of the corresponding earlier versions. Consequently, these specifications alone do not identify a measurable mechanical reason to prefer the restyling over an equivalent pre-restyling Cullinan. Price, interior, equipment, reliability, problems, and sale availability are not measured in the data, so they cannot support the choice here.

Rolls-Royce Cullinan engine and specs

Every listed engine is mounted at the front in a longitudinal position and uses direct injection. Each has 4 valves per cylinder. The 571 hp restyled version is recorded as 419 kW, compared with 420 kW for the earlier 571 hp version; both remain identified as 571 hp in the data.

Because displacement is identical, output density makes the comparison straightforward. The 571 hp 6.8 AT produces approximately 84.6 hp per litre, while the 600 hp 6.8 AT produces approximately 88.9 hp per litre. The stronger version therefore adds 29 hp, or about 5.1%, and 50 Nm, or about 5.9%, without increasing the listed displacement.

Rolls-Royce Cullinan performance and mpg

The 600 hp 6.8 AT reaches 100 km/h 0.3 seconds sooner, an improvement of about 5.8% over the 571 hp version. It does not gain a higher listed maximum speed: both outputs reach 250 km/h.

The more powerful version also has the lower listed city and highway consumption. Its city figure is 0.5 l/100 km lower, while its highway figure is 0.1 l/100 km lower. Both versions record the same combined figure of 15 l/100 km, the same CO₂ output of 341 g/km, and the same Euro 6 classification. MPG is not measured in the supplied data; consumption is given only in litres per 100 kilometres.

Rolls-Royce Cullinan dimensions and weight

Exterior dimensions are not measured in the supplied data. Gross weight, ground clearance, and fuel-tank capacity are also not measured for any version.

Kerb weight is 2,660 kg for every listed 6.8 AT. That produces a weight-to-power ratio of approximately 4.66 kg per hp for the 571 hp version and 4.43 kg per hp for the 600 hp version. The 600 hp model carries roughly 0.23 kg less per horsepower, supporting its quicker listed acceleration despite an identical kerb weight.

The original first-generation 600 hp 6.8 AT lists 255/45 R22 and 285/40 R22 wheel sizes. Wheel sizes are not measured for the original 571 hp version or either restyled version.

All four versions use Independent, pneumatic front and rear suspension. Ventilated disc brakes are listed at both the front and rear.

Which Rolls-Royce Cullinan version should you choose?

Choose the 6.8 AT with 600 hp if performance is the deciding factor. Compared with the 571 hp 6.8 AT, it provides 29 hp and 50 Nm more, reduces the 0–100 km/h time from 5.2 to 4.9 seconds, and improves the weight-to-power ratio from approximately 4.66 to 4.43 kg per hp. It also records slightly lower city and highway consumption, while combined consumption, CO₂ output, kerb weight, drivetrain, gearbox, displacement, and top speed remain equal.

Choose the 6.8 AT with 571 hp only if its unmeasured attributes make the case—for example, price or equipment. On the numerical evidence supplied, it has no fuel-economy, emissions, weight, or top-speed advantage. Price is not measured, so the data cannot determine whether the 600 hp version’s extra 29 hp and 50 Nm justify any additional cost.

The decision between the May 2018–May 2024 Cullinan and the restyled model produced since June 2024 cannot be settled by the listed mechanical specifications. Like-for-like 571 hp and 600 hp versions retain the same torque, acceleration, maximum speed, consumption, emissions, kerb weight, suspension, brakes, gearbox, and AWD system. The data therefore supports choosing by power output first. Between comparable pre-restyling and restyled cars, price, condition, interior, equipment, and reliability would need to decide the purchase, but all of those factors are not measured here.