2018 BMW 6 Series Convertible

2018 BMW 6 Series
MSRP range
$86,700 - $101,300
2018 BMW 6 Series


  • Both engines provide strong acceleration
  • Attractive interior design and customization options
  • Convertible doesn't excessively compromise trunk space


  • Compact rear seats and tight rear-seating area
  • Some competitors are a bit more exciting to drive
  • Android Auto is not available, and Apple CarPlay not standard

Which 6 Series does Edmunds recommend?

The 650i sDrive is an easy choice. On top of a bigger and more powerful engine, this trim comes standard with some options you'd want from a luxury grand tourer, such as extra seat adjustability and a higher-quality sound system. All-wheel drive adds little benefit and extra weight that makes the car less fun to drive, so unless you plan for snow we recommend the rear-wheel-drive sDrive. If the V8 seems like overkill, the 640i's six-cylinder engine remains a potent, less expensive and more fuel-efficient option. Plus, you can still option everything from the V8.

Edmunds' Expert Review

Overall rating

There are few cars left like the BMW 6 Series, and fewer still with BMW discontinuing the 6 Series coupe for 2018. While we expect a new generation will debut next year, this year's 6 Series remains an excellent choice for luxury drop-top cruising.

Of course, there are sportier and smaller four-seat convertibles, and there are significantly more expensive ones too. But few can match the BMW 6 Series' blend of style, quality and comfort. Drivers will find both engine options satisfying, while available all-wheel drive allows four-season practicality. While the current generation is dated, we still think the 2018 6 Series is worth considering if you're looking for a stylish luxury convertible.

2018 BMW 6 Series configurations

The 2018 BMW 6 Series is a four-seat convertible available in 640i and 650i trims. Some differences exist between the two (wheel size, the sound system and level of seat adjustability, for instance), but the trims primarily designate the type of the engine. The 640i has the six-cylinder, and the 650i has the V8. BMW makes every option and package available for both trims, ensuring variety no matter which engine you pick. Rear-wheel drive, which BMW calls sDrive, is standard, and all-wheel drive (xDrive) is optional.

Under the hood for the 640i is a turbocharged 3.0-liter engine (315 horsepower, 332 pound-feet of torque). An eight-speed automatic is the only transmission choice. Standard feature highlights include 18-inch wheels wrapped in all-season tires, keyless entry, a rearview camera, parking sensors, heated front seats, automatic high beams, navigation, Bluetooth, wireless phone charging, Wi-Fi hotspot, and a nine-speaker sound system.

The 650i adds a powerful turbocharged 4.4-liter V8 (445 hp, 480 lb-ft of torque). Aside from the engine, this trim gains a few features that are optional on the 640i, such as 19-inch wheels, upgraded power adjustable seats and a 12-speaker Harman Kardon sound system.

BMW offers a variety of premium color, upholstery and trim upgrades, providing buyers plenty of opportunities for personalization. While some stand-alone options are available, most upgrades are grouped in packages. A heated steering wheel only comes in the Cold Weather package, for instance, and you must order the Executive package for ventilated seats. The M Sport package introduces a sport body kit, a sport steering wheel, a higher top-speed limit, and package-specific 19-inch wheels with either all-season or summer tires.

Blind-spot monitoring is not standard but is available in the Driving Assistance package, which also includes a head-up display, lane departure warning, and front collision warning with low-speed automatic braking. An upgraded Driving Assistance Plus package adds adaptive cruise control and enhanced front collision mitigation. When you select the Parking Assistant package you get an automated parking system and side- and top-view cameras.

Trim tested

Edmunds has not yet driven any version of this vehicle. The following is our first take on what's significant about it and what you can expect.


The 2018 BMW 6 Series prioritizes comfort over sporty handling. Nevertheless, most drivers will enjoy the driving experience. The 6 Series rides comfortably over bumps, and there's plenty of power from both engine choices.


The 6 Series is a benchmark for front passenger comfort, with multi-adjustable seats and high-quality leather. Cramped rear seats are the unfortunate norm for four-seat convertibles.


Premium leather and attractive plastics adorn the 6 Series' interior. Operating most controls makes immediate sense, though the shifter takes a little getting used to. The convertible roof limits rear visibility, but that's a problem easily solved by putting the top down.


The 6 Series offers 12.4 cubic feet of trunk space with the top up and 10.6 cubic feet with the top down. That's quite roomy for a four-seat convertible at this price. A pass-through accommodates longer objects.


BMW's iDrive infotainment system is very useful once you learn it, and optional gizmos such as night vision easily impress. Still, we're disappointed that only Apple CarPlay is supported and not standard equipment.

Consumer reviews

There are no consumer reviews for the 2018 BMW 6 Series.

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Features & Specs

16 city / 25 hwy
Seats 4
8-speed shiftable automatic
445 hp @ 5500 rpm
17 city / 25 hwy
Seats 4
8-speed shiftable automatic
445 hp @ 5500 rpm
20 city / 29 hwy
Seats 4
8-speed shiftable automatic
315 hp @ 5800 rpm
19 city / 28 hwy
Seats 4
8-speed shiftable automatic
315 hp @ 5800 rpm
See all 2018 BMW 6 Series Convertible features & specs


Our experts’ favorite 6 Series safety features:

City Collision Mitigation
Alerts you about potential collisions with a vehicle or pedestrian in front of you at low speeds, and can automatically apply the brakes.
Night Vision with Pedestrian Detection
Detects pedestrians in front of the car at night. Can also display the night-vision camera through the entertainment screen.
Lane Departure Warning
Lets you know if you're drifting out of your lane unintentionally (you didn't use your turn signal).

2018 BMW 6 Series Convertible for Sale

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More about the 2018 BMW 6 Series
2018 BMW 6 Series Convertible Overview

The 2018 BMW 6 Series Convertible is offered in the following styles: 650i 2dr Convertible (4.4L 8cyl Turbo 8A), 650i xDrive 2dr Convertible AWD (4.4L 8cyl Turbo 8A), 640i 2dr Convertible (3.0L 6cyl Turbo 8A), and 640i xDrive 2dr Convertible AWD (3.0L 6cyl Turbo 8A).

What do people think of the 2018 BMW 6 Series Convertible?

Consumer ratings and reviews are also available for the 2018 BMW 6 Series Convertible and all its trim types. 0 Edmunds consumer reviews allow users to sift through aggregated consumer reviews to understand what other drivers are saying about any vehicle in our database. Detailed rating breakdowns (including performance, comfort, value, interior, exterior design, build quality, and reliability) are available as well to provide shoppers with a comprehensive understanding of why customers like the 2018 6 Series Convertible.

Edmunds Expert Reviews

Edmunds experts have compiled a robust series of ratings and reviews for the 2018 BMW 6 Series Convertible and all model years in our database. Our rich analysis includes expert reviews and recommendations for the 2018 6 Series Convertible featuring deep dives into trim levels including 650i, 650i xDrive, 640i, etc. with careful analysis around pricing, features, performance, mpg, safety, interior, and driving and performance. Edmunds also offers expert ratings, road test and performance data, long-term road tests, first-drive reviews, video reviews and more.

Read our full review of the 2018 BMW 6 Series Convertible here.
Our Review Process

This review was written by a member of Edmunds' editorial team of expert car reviewers. Our team drives every car you can buy. We put the vehicles through rigorous testing, evaluating how they drive and comparing them in detail to their competitors.

We're also regular people like you, so we pay attention to all the different ways people use their cars every day. We want to know if there's enough room for our families and our weekend gear and whether or not our favorite drink fits in the cupholder. Our editors want to help you make the best decision on a car that fits your life.

What's a good price for a New 2018 BMW 6 Series Convertible?

Shop with Edmunds for perks and special offers on new cars, trucks, and SUVs near Ashburn, VA. Doing so could save you hundreds or thousands of dollars. Edmunds also provides consumer-driven dealership sales and service reviews to help you make informed decisions about what cars to buy and where to buy them.

Which 2018 BMW 6 Series Convertibles are available in my area?

2018 BMW 6 Series Convertible Listings and Inventory

Simply research the type of used car you're interested in and then select a car from our massive database to find cheap used cars for sale near you. Once you have identified a vehicle you're interested in, check the Carfax and Autocheck vehicle history reports, read dealer reviews, and find out what other owners paid for the 2018 BMW 6 Series Convertible.

Shop Edmunds' car, SUV, and truck listings of over 6 million vehicles to find a cheap new, used, or certified pre-owned (CPO) 2018 BMW 6 Series Convertible for sale near you.

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Find a new BMW 6 Series for sale - 8 great deals out of 12 listings starting at $20,415.

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Why trust Edmunds?

Edmunds has deep data on over 6 million new, used, and certified pre-owned vehicles, including all models of the 2018 BMW 6 Series Convertible and all available trim types: 640i xDrive, 650i, 650i xDrive, etc. Rich, trim-level features & specs and options data tracked for the 2018 BMW 6 Series Convertible include (but are not limited to): MSRP, available incentives and deals, average price paid, warranty information (basic, drivetrain, and maintenance), features (interior and exterior color, upholstery, bluetooth, navigation, cruise control, parking assistance, lane sensing, keyless ignition, satellite radio, folding rears seats,run flat tires, wheel type, tire size, sunroof, etc.), vehicle specifications (engine cylinder count, drivetrain, engine power, torque, engine displacement, transmission), fuel economy and MPG (city, highway, and combined, fuel capacity, range), vehicle dimensions (interior cabin space, vehicle length and width, seating capacity, cargo space). Edmunds also provides tools to allow shopper to compare vehicles to similar models of their choosing by warranty, interior features, exterior features, specifications, vehicle dimensions, consumer rating, edmunds expert review, safety rating, and color.

Should I lease or buy a 2018 BMW 6 Series?

Is it better to lease or buy a car? Ask most people and they'll probably tell you that car buying is the way to go. And from a financial perspective, it's true, provided you're willing to make higher monthly payments, pay off the loan in full and keep the car for a few years. Leasing, on the other hand, can be a less expensive option on a month-to-month basis. It's also good if you're someone who likes to drive a new car every three years or so.

Check out BMW lease specials