2025 BMW 8 Series

The 2025 BMW 8 Series brings grand-touring character to the convertible market, with three trims ranging from the rear-wheel-drive 840i to the 523-horsepower M850i xDrive. At Herb Chambers BMW of Sudbury in Sudbury, MA, shoppers can explore how engine layout, drivetrain, performance, fuel requirements, and pricing change across the lineup. This page covers the model’s key specifications, trim-level differences, comparisons with other BMW models, and practical ways to begin the shopping process. From reviewing live inventory to arranging a visit, the dealership provides a local starting point for evaluating the 2025 BMW 8 Series.

Starting MSRP

$101,400

Horsepower

335–523 hp

EPA MPG

17–21 city / 24–29 hwy

Drivetrain

Rear Wheel Drive / All Wheel Drive

Fuel

Premium Unleaded (Recommended) / Premium Unleaded (Required)

Body Style

Convertible

How the 2025 BMW 8 Series Compares With BMW's Lineup

Pricing depends on trim, powertrain, performance, and drivetrain. The 2025 BMW 8 Series starts at $101,400, and MSRP excludes tax, title, registration and dealer fees.

Compared with the 2025 BMW 4 Series, the 8 Series starts at $101,400 versus $61,150 and offers 335 to 523 horsepower versus 255 horsepower. The 4 Series may suit shoppers focused on a lower starting price, while the 8 Series emphasizes greater available power and convertible grand-touring presence; the 4 Series offers seating for 4–5 and all-wheel drive.

Compared with the 2025 BMW Z4, the 8 Series starts at $101,400 versus $54,500 and spans 335 to 523 horsepower versus 255–382 horsepower. The Z4 may appeal to shoppers seeking a lower-priced rear-wheel-drive roadster, while the 8 Series offers a broader performance range and all-wheel-drive availability.

Specifications and Configuration

The 2025 BMW 8 Series is a convertible with an eight-speed automatic transmission, a 111.1-inch wheelbase, and dimensions of 191.2 inches long, 74.9 inches wide, and 53 inches high. Width with mirrors is 84.1 inches, and cargo space behind the rear seats measures 12.4 cubic feet.

Across the lineup, output ranges from 335 to 523 horsepower and 369 to 553 lb-ft of torque. Engine choices range from a 3.0-liter inline six-cylinder to a 4.4-liter V8, with peak power at 5,000 to 5,500 rpm and peak torque at 1,600 to 1,800 rpm.

The 840i uses rear-wheel drive, while the 840i xDrive and M850i xDrive use all-wheel drive. EPA fuel economy ranges from 17 to 21 city MPG and 24 to 29 highway MPG. Premium unleaded is recommended for the 840i and 840i xDrive, while the M850i xDrive requires premium unleaded.

Buying a 2025 BMW 8 Series in Sudbury

Herb Chambers BMW of Sudbury serves shoppers in Sudbury, MA, from 128 Boston Post Road, Rte 20. The dealership receives vehicles on a rolling basis, so the most current way to review new BMW options is to search inventory.

Questions about a 2025 BMW 8 Series can be directed to Herb Chambers BMW of Sudbury at (508) 978-2098. Shoppers considering a trade can begin online with the trade-in tool.

What to Weigh Before Buying

Trim selection changes more than the starting price. The 840i pairs 335 horsepower with rear-wheel drive, the 840i xDrive keeps the same horsepower while adding all-wheel drive, and the M850i xDrive moves to a 523-horsepower V8 with 553 lb-ft of torque.

Performance and fuel use also vary by configuration. Acceleration ranges from 3.9 to 5 seconds from 0 to 60 mph, while city fuel economy ranges from 17 to 21 MPG and highway fuel economy ranges from 24 to 29 MPG.

The convertible body style, 12.4 cubic feet of cargo space behind the rear seats, 18-gallon fuel capacity, and 4,156- to 4,691-pound curb weight help define how the 8 Series fits into a shopper’s driving routine.