BMW 8 Series vs Mercedes-Benz S-Class

The 2025 Mercedes-Benz S-Class is an automotive icon that fulfills its lofty expectations for comfort, performance, technology, and refinement. Last redesigned for the 2021 model year, Mercedes’ flagship sedan receives only small changes for 2025, including newly standard features like digital key functionality and a center airbag, some additional paint colors, and wider availability of the AMG Line trim package.

Verdict: Quite simply, the S-Class is the best luxury sedan that doesn't wear a Bentley or Rolls-Royce badge. With several models to choose from and a dizzying array of options, there seems to be a perfect match for a variety of tastes, provided you have a six-figure budget.

The BMW 8 Series is the third element of BMW’s flagship trinity. Just as the 7 Series is the top sedan in BMW’s lineup, and the X7 is the top SUV, the 8 Series lords over lesser coupes and convertibles in the BMW hierarchy.

The 8 Series nameplate dates back to 1990, when BMW launched the first generation in the form of a wedge-shaped coupe with pop-up headlights. After that version—known as the E31—went out of production, the 8 Series took a long hiatus, returning in its current G15 form for the 2019 model year.

The 2023 BMW 8 Series gets some small updates for the new model year, including exterior styling tweaks and an enlarged touchscreen. More paint color and wheel design options round out what’s new.

The lineup remains unchanged, however, consisting of 840i, 840i xDrive, M850i xDrive, and high-performance M8 Competition variants in coupe, convertible, and four-door Gran Coupe body styles. An Alpina B8 version of the Gran Coupe (launched for the 2021 model year) also returns. We tested an 840i Gran Coupe for this review.