Porsche 911 997.1 3.6 petrol 421PS

3.6 petrol 421PS is one engine in the Porsche 911 997.1. Power, economy, and CO₂ below are ranges where the trims or gearboxes differ. Each row in the variant table is one configuration.

Engine summary

Fuel: Petrol
Power: 420.8 PS
Combined mpg: 22.1 mpg
CO₂: 307 g/km
Variants: 2 variants
UK dataset: 23 cars in our dataset

Catalogue registration span: 2006 – 2018. This is the span of records, not a production announcement.

Where this engine is offered

TrimsGt3, Gt3 RS

GearboxesManual

FuelsPetrol

Body stylesCoupe

Variants with this engine

2 published variants.

Gt3 3.6 petrol 421PS420.8 PS
Gt3 RS 3.6 petrol 421PS420.8 PS

Stored PS for published variants of this engine. Brake horsepower is not plotted.

NEDC combined mpg

Gt3 3.6 petrol 421PS22.1 mpg
Gt3 RS 3.6 petrol 421PS22.1 mpg

Combined mpg on the NEDC test only. A different official cycle is not on this chart.

Variant	Fuel	Gearbox	Body	Power	Combined mpg	Dataset
Gt3 3.6 petrol 421PS	Petrol	Manual	Coupe	420.8 PS (415 bhp)	22.1 mpg (NEDC)	13
Gt3 RS 3.6 petrol 421PS	Petrol	Manual	Coupe	420.8 PS (415 bhp)	22.1 mpg (NEDC)	10

Other engines in this generation

Mpg ranges are not ranked across engines because the test cycle is stored on the variant, not on the engine range.

Engine	Fuel	Power	Combined mpg range	CO₂ range	Dataset
3.6 petrol 325PS	Petrol	325 PS	24.1 mpg	272 g/km	11
3.6 petrol 330PS	Petrol	329.6 PS	25.2–25.7 mpg	266–270 g/km	183
3.6 petrol 480PS	Petrol	480 PS	20.6–21.9 mpg	307–326 g/km	102
3.8 petrol 355PS	Petrol	354.9 PS	23.7–23.9 mpg	285–286 g/km	256
3.8 petrol 360PS	Petrol	360 PS	24.4–24.6 mpg	277–283 g/km	423

Back to 997.1

Related VehicleScore tools

Check your Porsche 911 997.1 3.6 petrol 421PS

Enter a UK registration to check a Porsche 911 3.6 petrol 421PS. This page describes that engine, not one number plate.

How these figures are produced

Specifications and counts come from the VehicleScore UK vehicle catalogue. A count of cars is the number of records in that dataset. It is not UK production, not sales, and not the number of cars currently on the road.

Power is shown in PS where the catalogue stores PS, and in bhp only where bhp is stored separately. Official fuel economy is labelled NEDC or WLTP when the test cycle is known. Figures from different cycles are not ranked together. Empty values are left blank.

The catalogue does not store a revision date, so these pages do not show a last-updated day.