2023 BMW 8-Series

Engine, Transmission, and Performance

BMW’s biggest coupe and convertible start off with a 335-hp turbocharged inline-six-cylinder. These 840i models pair with an eight-speed automatic transmission and either rear- or all-wheel drive (called xDrive in BMW’s parlance). While we haven’t driven an 8 with the six-cylinder, BMW has built a reputation on silky smooth and responsive powertrains, so only speed freaks will likely be disappointed in the 2023 BMW 8-Series.

Instead, we’ve driven both body styles of the M850i that feature a 523-hp twin-turbo V-8, eight-speed automatic, and standard all-wheel drive. This combination delivers impressive acceleration for the Bimmer’s size and provides a rich soundtrack in the sportiest setting. Likewise, the transmission transitions from relaxed to reactive based on the driver’s right foot. Most importantly, the 8-series delivers on its grand-touring promises, with a supremely quiet ride and surprising athleticism.

Its steering feedback is direct and linear but filters out road imperfections and front-tire feedback. Although its adaptive dampers allow extra flexibility depending on the selected drive mode, they make the 2023 BMW 8-Series remarkably stable during cornering in their stiffest setting. The car’s powerful brake system and firm pedal feel further enhance the feeling of absolute confidence

Fuel Economy and Real-World MPG

The more powerful M850i, which includes a twin-turbo V-8 and standard all-wheel drive, means a significant reduction in EPA fuel-economy ratings versus the turbo six-cylinder that powers 840i models. The M850i is rated up to 17 mpg city and 25 highway, whereas the less powerful 840i has estimates of up to 23 mpg city and 30 highway.

We tested the M850i coupe and convertible on our 75-mph fuel-economy route where they achieved 29 and 26 mpg, respectively. While both body styles exceeded their EPA ratings, the coupe did so by 4 mpg whereas the soft top only managed 1 mpg more. For more information about the 2023 BMW 8-Series fuel economy, visit the EPA’s website.

Interior, Comfort, and Cargo

The 2023 BMW 8-Series interior offers all the infotainment gadgetry and luxury features expected in a high-priced grand tourer. Every model has 14-way power-adjustable heated front seats, soft-close automatic doors, and customizable ambient lighting; more extravagant upgrades include glass control and additional high-end materials. It can even be outfitted with unique BMW Individual options, such as a fancy white-and-brown color scheme.

Although it does offer a pair of vestigial rear seats, they’re not pleasant places for adults to spend time. The 8’s low roofline also impedes headroom in the front seat and outward visibility isn’t great, but that’s the price of fashion. Its interior cubby storage consists of a coverable tray at the front of the center console, a useful central bin, and adequate door pockets. We also managed to fit five carry-on bags in the coupe’s trunk and another six with the back seats stowed, but the convertible held one bag less in each scenario.

Infotainment and Connectivity

A 12.3-inch digital gauge cluster and a 12.3-inch touchscreen are standard on every 2023 BMW 8-Series. Unfortunately, the instrument panel is overcrowded and not particularly intuitive to operate with the steering-wheel controls. The infotainment system has a variety of ways to interact with it, including a useful rotary knob on the center console. It also features standard Apple CarPlay capability, wireless charging, and a Wi-Fi hotspot—Android Auto is absent. Those who want a more elaborate sound system can opt for the Bowers & Wilkins Diamond surround system.

Safety and Driver-Assistance Features

The 2023 BMW 8-Series offers myriad driver-assistance technology, including a semi-autonomous driving mode. For more information about the 8-series crash-test results, visit the National Highway Traffic Safety Administration (NHTSA) and Insurance Institute for Highway Safety (IIHS) websites.

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Full Specifications