Lexus IS F: Which Version Should You Buy?
The Lexus IS F catalogue data contains only one generation and one version: the 5.0 AT, produced from 2007 to 2014 as a Sedan. There is therefore no choice between engines, transmissions, body styles, or generations. The buying decision is simpler: determine whether this specific combination—423 hp, RWD, an 8-speed Automatic, and a naturally aspirated 4,969 cc Gasoline engine—fits your priorities.
The Lexus IS F catalogue data contains only one generation and one version: the 5.0 AT, produced from 2007 to 2014 as a Sedan. There is therefore no choice between engines, transmissions, body styles, or generations. The buying decision is simpler: determine whether this specific combination—423 hp, RWD, an 8-speed Automatic, and a naturally aspirated 4,969 cc Gasoline engine—fits your priorities.
Lexus IS F generations compared
The Lexus IS F has one recorded generation, the 1 generation, covering 2007–2014. It was offered as a Sedan with one listed modification, the 5.0 AT. Because the data contains no additional generation or restyled version, there are no documented generation-to-generation changes to compare.
This also means a buyer cannot use the catalogue figures to choose between an early and late mechanical specification. Every listed production year belongs to the same generation and points to the same 5.0 AT version.
Lexus IS F engine and specs
The 5.0 AT uses a 4,969 cc Gasoline engine with 8 cylinders in a V-shaped layout. The engine is Front, longitudinal, has 4 valves per cylinder, Distributed injection (multi-point), and no boost. Its compression ratio is 11.8, while the bore and stroke are 94 × 89.5. Output is 423 hp (311 kW) at 6600 rpm, and maximum torque is 505 Nm at 5200 rpm.
Those figures equal approximately 85.1 hp per litre. With a kerb weight of 1,700 kg, the car carries approximately 4.02 kg per horsepower, or about 248.8 hp per tonne. These calculated ratios help explain what the sole version offers without introducing specifications beyond the supplied data.
| Version | Power | Torque | Displacement | Fuel | Cylinders | Layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|---|
| 5.0 AT | 423 hp | 505 Nm | 4,969 cc | Gasoline | 8 | V-shaped | No | 8-speed Automatic | RWD |
Because there is only one version, the engine decision is absolute rather than comparative. Choosing an IS F from this catalogue means choosing the 5.0 AT with its 423 hp engine, 8-speed Automatic, and RWD; no lower-powered, boosted, AWD, or alternative-transmission version is listed.
Performance, fuel economy, and mpg data
The Lexus IS F 5.0 AT accelerates from 0 to 100 km/h in 4.8 seconds and has a top speed of 270 km/h. No other version is available in the data to trade performance for lower fuel use.
Fuel consumption for the 5.0 AT is 16.8 l/100 km in the city, 8.3 l/100 km on the highway, and 11.4 l/100 km combined. The city figure is 8.5 l/100 km higher than the highway figure, while combined consumption sits 5.4 l/100 km below the city result and 3.1 l/100 km above the highway result.
CO₂ emissions are not measured, and the ecological class is not measured. Fuel economy is supplied in l/100 km; an official mpg figure is not measured. The specified fuel is 95.
Lexus IS F dimensions, weight, and wheels
The 5.0 AT has a kerb weight of 1,700 kg and a gross weight of 2,120 kg, a difference of 420 kg. Ground clearance is 112 mm, and the fuel tank holds 64 litres.
The listed wheel sizes are 225/40 R19 and 235/55 R19. Overall length, width, height, wheelbase, and luggage capacity are not measured in the supplied data.
Both axles use Independent, spring suspension. The front brakes are Ventilated disc, and the rear brakes are Disc ventilated.
Which Lexus IS F version should you buy?
Buy the 5.0 AT if your requirements match the only configuration documented for the Lexus IS F: a Sedan with 423 hp, 505 Nm, RWD, and an 8-speed Automatic. Its strongest numerical case is performance, combining a 4.8-second 0–100 km/h time with a 270 km/h top speed and approximately 248.8 hp per tonne.
The main trade-off is fuel consumption. The 5.0 AT uses 16.8 l/100 km in the city and 11.4 l/100 km combined, although highway consumption falls to 8.3 l/100 km. Ground clearance is 112 mm, another figure worth checking against the roads on which the car will be used.
There is no higher-output version to justify extra money and no lower-output version that sacrifices speed for economy in this dataset. Likewise, no newer generation offers documented changes. The sensible choice is therefore not between specifications but between individual 5.0 AT cars from the 2007–2014 production period. Price, condition, mileage, service history, reliability records, and known problems are not measured, so the supplied figures cannot determine whether one particular car is better value than another.