Mercedes-Benz S-Class vs Porsche Panamera

Side by side

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

Fuel economy and cost

Fuel bills differ by $1,600 a year. The Porsche Panamera comes to $3,900 and the Mercedes-Benz S-Class to $5,500, both at 15,000 miles a year.

Where each one ranks

Within their class the Mercedes-Benz S-Class is 23rd of 25 large cars, in the bottom quarter. The Porsche Panamera is tied for 18th of 25 large cars, in the lower half.

The Mercedes-Benz S-Class has 1 rated version, from 15 to 15 MPG. The Porsche Panamera has 2, from 21 to 21 MPG. For the most efficient versions, the Mercedes-Benz S-Class is rated 8 higher on the highway (20 against 12), while the Porsche Panamera is rated 7 higher on the highway (25 against 18).

The two versions closest in rating are Maybach S680 4matic: 6.0 L, 12 cyl, Automatic 9-spd, AWD at 15 MPG and Panamera 4: 2.9 L, 6 cyl, Automatic (AM-S8), AWD at 21, 6 MPG apart.

Ratings by model year

Both models are in the data for 8 model years, 2019 to 2026. The Mercedes-Benz S-Class has the higher best rating in 0 of them and the Porsche Panamera in 5, with 3 level. The widest gap, 6 MPG, was in 2026, when the Porsche Panamera led.

Go further

• All versions and the trend of the Mercedes-Benz S-Class
• All versions and the trend of the Porsche Panamera
• The full large cars ranking