2018 BMW 6 Series Convertible

Rating7.7

Ranked #4 in Midsize Convertible

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Starting MSRP 

$86,700 - $101,300

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Key Spec of 2018 BMW 6 Series Convertible
fuel economy

20/23/29

fuel type

Premium Unleaded (required)

horsepower

315 hp @ 5800 rpm

basic warranty

4 yr./ 50000 mi.

ProsConsWhat's New

Powerful as well as the fuel-efficient base engine and a super-strong V8 engine

Cramped rear cabin with tight legroom

Remains unchanged for 2018

Lovely cabin with exquisite materials and comfy seats

Competitors are much more responsive and fun to drive

Enough cargo space and a roomy front-cabin

Apple CarPlay isn't standard while Android Auto isn't even offered

2018 BMW 6 Series Convertible Price, Review, Ratings and Pictures

Updated on: August 24, 2022

Nathan Dyer's image
Nathan Dyer 

Senior Editor

The 2018 BMW 6 Series Convertible is a midsize luxury convertible offered in 2 trims, starting off at a base MSRP of $86,700. For that price, it mainly competes with the Mercedes-Benz SL-Class Convertible and the Porsche 911 Carrera Convertible. Between 2 trims, the BMW 6 Series Convertible offers 2 powertrains. The base engine is a 3.0L turbocharged inline-6 capable of making 315 horsepower and 332 lb-ft of torque. If more power is required, there is also a 445 horsepower-making 4.4L turbocharged V8 engine. Both engines are mated to an 8-speed automatic transmission. The BMW 6 Series Convertible reaches 60 mph from zero in 5.5 seconds on its base engine, which gets pumped up to 4.5 seconds with the V8 engine. Depending on the powertrain, the BMW 6 Series Convertible can manage a combined fuel economy of between 20 and 23 mpg. While we’re on the topic of choices, the 17 striking colors the BMW 6 Series Convertible comes in really pull you towards itself.


Over All Rating

7.7

Out of 10

6.00
7.60
7.80
7.10
7.60
7.80
8.00
9.00
Notable Rankings

Pictures & Videos


Trims

640i$86,700 onwards

  • 1St row LCD monitor
  • Driver Lumbar support
  • Dual Zone Front Automatic Air Conditioning
  • Front Fog/driving lights
  • Navigation system
  • Parking assist
  • Rain Sensing Windshield wipers

650i$101,300 onwards

  • Nappa leather seats

Used 2018 BMW 6 Series Convertible For Sale

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2017 BMW 6 SeriesHome Delivery
15
Price Drop, $700
Previous Price: $4339921 Aug 2022

2017 BMW 6 Series 650i

650i 4dr Sedan (4.4L 8cyl Turbo 8A)

$42,699
Est. $579/mo
Good Deal
$3,970 Below market
RMV: $46,669
Diberville, MS
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2018 BMW 6 Series
15
Price Drop, $1000
Previous Price: $4999029 Jul 2022

2018 BMW 6 Series 650i

650i xDrive 4dr Sedan AWD (4.4L 8cyl Turbo 8A)

$48,990
Est. $665/mo
Good Deal
$4,476 Below market
RMV: $53,466
Hazelwood, MO
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2018 BMW 6 Series
7
Price Drop, $561
Previous Price: $5189414 Jul 2022

2018 BMW 6 Series 640i Convertible

640i xDrive 2dr Convertible AWD (3.0L 6cyl Turbo 8A)

$51,333
Est. $696/mo
Good Deal
$4,684 Below market
RMV: $56,017
Hillside, NJ
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2017 BMW 6 SeriesHome Delivery
13
Price Drop, $2014
Previous Price: $3299517 Aug 2022

2017 BMW 6 Series 640i

640i xDrive 4dr Sedan AWD (3.0L 6cyl Turbo 8A)

$30,981
Est. $420/mo
Good Deal
$2,731 Below market
RMV: $33,712
Avenel, NJ
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2017 BMW 6 Series
25
Price Drop, $1354
Previous Price: $4779816 Aug 2022

2017 BMW 6 Series 650i Convertible

650i xDrive 2dr Convertible AWD (4.4L 8cyl Turbo 8A)

$46,444
Est. $630/mo
Good Deal
$3,874 Below market
RMV: $50,318
Weatherford, TX
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2018 BMW 6 Series
5
Price Drop, $110
Previous Price: $4977517 Aug 2022

2018 BMW 6 Series 640i Convertible

640i 2dr Convertible (3.0L 6cyl Turbo 8A)

$49,665
Est. $674/mo
Good Deal
$4,004 Below market
RMV: $53,669
Eugene, OR
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2017 BMW 6 SeriesHome Delivery
1
Price Drop, $300
Previous Price: $4129516 Aug 2022

2017 BMW 6 Series 640i

640i xDrive 4dr Sedan AWD (3.0L 6cyl Turbo 8A)

$40,995
Est. $556/mo
Good Deal
$3,224 Below market
RMV: $44,219
Arlington Heights, IL
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2017 BMW 6 Series
20
Price Drop, $1000
Previous Price: $2999516 Aug 2022

2017 BMW 6 Series 640i

640i 4dr Sedan (3.0L 6cyl Turbo 8A)

$28,995
Est. $393/mo
Good Deal
$2,197 Below market
RMV: $31,192
Manassas, VA
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2017 BMW 6 Series
5

2017 BMW 6 Series 650i Coupe

650i xDrive 2dr Coupe AWD (4.4L 8cyl Turbo 8A)

$35,995
Est. $488/mo
Good Deal
$2,717 Below market
RMV: $38,712
Manassas, VA
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Colors and Styles

2018 BMW 6 Series Convertible in Alpine White color
Alpine White

Features

vehicle bio
base price

$89700

body style

2dr Convertible

engine type
displacement

182 cu in

horse power

315 hp @ 5800 rpm

torque

330 lb.-ft. @ 1300 rpm

transmission

8 speed Automatic

dimensions
length

193 in

wheelbase

112 in

width

75 in

curb weight

4415 lbs

Height

54 in

Ground Clearance

5 lbs

capacity
passenger volume

89 cu ft

cargo volume

11 cu ft

passenger capacity

4 Seats

fuel economy
city/combined/highway

19/22/28 mpg

highway range

518.0 mi

warranty
basic warranty

4 yr./ 50000 mi.


BMW 6 Series 5 year Cost To Own


Cash Price(MSRP)
$85,026
5 Year Cost To Own
$106,504
Total 5 year Cost To Own -  $106,504
Year 1Year 2Year 3Year 4Year 5total
Depreciation$16,974$8,862$7,236$8,115$7,092$48,279
Insurance$1,826$1,890$1,956$2,025$2,095$9,792
Fuel$2,641$2,720$2,801$2,885$2,972$14,019
MaintenanceNANA$785$4,764$4,005$9,554
RepairsNANANA$1,185$1,822$3,007
Financing Interest$4,573$3,677$2,722$1,703$616$13,291
Taxes and Fees$7,019$466$408$361$308$8,562
Total Cost-To-Own$33,033$17,615$15,908$21,038$18,910$106,504
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