Fuelfacts

Minicompact cars · Gasoline · model year 2026

MINI John Cooper Works vs Porsche 911

For model year 2026, the MINI John Cooper Works gets 30 MPG combined and the Porsche 911 21: a 9 MPG lead, or 43% on the lower figure.

Side by side

Ratings of the MINI John Cooper Works and the Porsche 911
MeasureMINI John Cooper WorksPorsche 911
Combined fuel economy (best version)30 MPG21 MPG
City27 MPG18 MPG
Highway37 MPG25 MPG
Annual fuel cost$2,750$3,900
Tailpipe CO2288 g/mile429 g/mile
Lowest rated version30 MPG15 MPG
Rated versions220
Rank in class (best combined rating)3rd of 126th of 12
ClassMinicompact carsMinicompact cars
PowertrainGasolineGasoline

Better figure in bold; each model's most efficient version.

Fuel economy and cost

MINI John Cooper Works30 MPGPorsche 91121 MPG
Best combined rating.

Under the file's assumptions the MINI John Cooper Works costs about $2,750 a year to fuel and the Porsche 911 about $3,900: $1,150 a year apart on 15,000 miles.

MINI John Cooper Works$2,750Porsche 911$3,900
Annual fuel cost.

Where each one ranks

Within their class the MINI John Cooper Works is 3rd of 12 minicompact cars, in the top quarter, ahead of 82% of the others. The Porsche 911 is 6th of 12 minicompact cars, in the upper half, ahead of 55% of the others.

The MINI John Cooper Works has 2 rated versions, from 30 to 30 MPG. The Porsche 911 has 20, from 15 to 21 MPG. For the most efficient versions, the MINI John Cooper Works is rated 10 higher on the highway (37 against 27), while the Porsche 911 is rated 7 higher on the highway (25 against 18).

The two versions closest in rating are JCW 2 Door: 2.0 L, 4 cyl, Automatic (AM-S7), FWD at 30 MPG and 911 Carrera Cabriolet: 3.0 L, 6 cyl, Automatic (AM-S8), RWD at 21, 9 MPG apart.

Ratings by model year

Both models are in the data for 8 model years, 2019 to 2026. The MINI John Cooper Works has the higher best rating in 8 of them and the Porsche 911 in 0. The widest gap, 9 MPG, was in 2026, when the MINI John Cooper Works led.

Best combined rating by model year
Model yearMINI John Cooper WorksPorsche 911Gap
20263021+9
20253021+9
20242921+8
20232921+8
20222921+8
20212921+8
20202920+9
20192825+3

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