BMW 6-Series BMW 6-Series 2012 Buick Cascada Buick Cascada 2018

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BMW 6-Series vs. Buick Cascada Price Comparison (MSRP)

The sticker prices, before adjusting for remaining feature differences. Usually these are the numbers you will see on the window stickers.

Models in short supply often sell at or even above these prices.

BMW 6-Series vs. Buick Cascada Invoice Comparison

Lowest Total Price: $37,385

Buick Cascada Premium   
Difference: $45,110

Lowest Total Invoice: $35,906

Buick Cascada Premium   
Difference: $40,234

Calculate Payments

  Down Payment Interest Rate Term
Model Year20122012201220182018
Model6-Series6-Series6-SeriesCascadaCascada
Trim640i650iM6PremiumSport Touring
Body2dr Convertible2dr Convertible2dr Convertible2dr Convertible2dr Convertible
Base Price $81,100 $90,500 $113,100 $36,065 $37,065
Base Invoice $74,790 $83,440 $104,050 $34,622 $35,582
Heated front seats 500 500      
App support     250    
Wood trim     0    
Metallic paint (extra cost)       395  
Heated front seats 455 455      
App support     230    
Wood trim     0    
Metallic paint (extra cost)       359  
Options (change) 500 500 250 395 0
Options (change) 455 455 230 359 0
Destination 895 895 895 925 925
Gas Tax 0 0 1,300 0 0
Total Price $82,495 $91,895 $115,545 $37,385 $37,990
Total Invoice $76,140 $84,790 $106,475 $35,906 $36,507

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While we strive for accuracy, the site is not error-free, and prices can change at any time.

Dealer Price Quotes

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Request free, no-obligation BMW 6-Series dealer quotes or Buick Cascada dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: BMW 6-Series vs. Buick Cascada

Lowest Adjusted Price and Invoice: Buick Cascada Premium
TrueDelta Adjusted Price Difference: $43,050
TrueDelta Adjusted Invoice Difference: $38,333
Model Year20122012201220182018
Model6-Series6-Series6-SeriesCascadaCascada
Trim640i650iM6PremiumSport Touring
Body2dr Convertible2dr Convertible2dr Convertible2dr Convertible2dr Convertible
Engine315hp I6400hp V8560hp V8200hp I4200hp I4
TransmissionT8T8S7T6T6
DrivetrainRWDRWDRWDFWDFWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)205, 9205, 9500, 12?, 7?, 7
Tire (rear if not all the same)245/45-18245/40-19265/40-19245/40-20245/40-20
Total Price$82,495$91,895$115,545$37,385$37,990
Adjustments for Features-2,060-2,660-3,5600-75
Feature-Adjusted Total Price$80,435$89,235$111,985$37,385$37,915
Cost Above Minimum$0$8,800$31,550$0$530
Total Invoice$76,140$84,790$106,475$35,906$36,507
Adjustments for Features-1,901-2,454-3,2810-72
Feature-Adjusted Total Invoice$74,239$82,336$103,194$35,906$36,435
Cost Above Minimum$0$8,097$28,955$0$529

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Features Comparison: BMW 6-Series vs. Buick Cascada

Model Year20122012201220182018
Model6-Series6-Series6-SeriesCascadaCascada
Trim640i650iM6PremiumSport Touring
Body2dr Convertible2dr Convertible2dr Convertible2dr Convertible2dr Convertible
Transmission and Drivetrain 
8-speed manually-shiftable automatic$1300$1300   
7-speed automated manual  $1200  
6-speed manually-shiftable automatic   $1100$1100
RWD$0$0$0  
FWD   $0$0
Accessories 
Heated steering wheel   $100$100
Power retractable rear window$350$350$350  
Proximity key$250$250$250  
Remote start   $150$150
Remote window/roof operation$15$15$15  
Tilt/telescoping steering wheel, manual   $250$250
Tilt/telescoping steering wheel, power$350$350$350  
Universal garage door opener$100$100$100  
Wind blocker   $300$300
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0$0$0  
Automatic seat belt presenters, front row   $100$100
Forward collision warning   $200$200
Lane departure warning   $200$200
Temporary spare tire   $150$150
Tires, run-flat$150$150   
Vehicle health reports   $0$0
Cargo Management 
Cargo mat$40$40$40  
Rear seat pass-through  $100  
Second-row low console   $100$100
Ski sack  $50  
Climate Control 
Automatic air recirculation$100$100$100  
Heated windshield washer nozzles$15$15$15  
Interior air filter$0$0$0  
Residual heat$50$50$50  
Drivetrain 
Active rear differential  $500  
Engine / Motor 
Automatic start / stop$150 $150  
Regenerative braking$0$0$0  
Infotainment 
4G LTE connectivity   $0$0
App support  $0$0$0
HD radio$50$50$50  
Media drive$15$15$15  
Satellite radio   $200$200
Siri Eyes Free support   $0$0
Surround sound  $250  
Telematics service, such as OnStar$200$200$200  
Telematics service, such as OnStar, with navigation   $225$225
USB port  $25$25$25
Wi-Fi hotspot   $50$50
Instruments, Lights, and Mirrors 
Auto-dimming driver-side mirror$75$75$75  
Auto-dimming passenger-side mirror$75$75$75  
Cornering lights$50$50$50  
Fog lights$125$125 $125$125
Headlight washers$50$50$50  
Mirror tilt-down in reverse$25$25$25  
Power-folding mirrors$50$50$50  
Seats and Interior Trim 
Door sill trim plates$100$100 $100$100
Folding second row seats   $300$300
Illuminated door sill trim plates  $200  
Leather door panel trim$250$250$250  
Memory system, driver seat$200$200$200  
Memory system, passenger seat $150$150  
Metal pedals    $75
Power 4-way lumbar adjuster, driver seat$150$150$150  
Power 4-way lumbar adjuster, passenger seat$150$150$150  
Power headrest height adjuster, driver seat$50$50$50  
Power headrest height adjuster, passenger seat$50$50$50  
Power lumbar adjuster, driver seat   $100$100
Power lumbar adjuster, passenger seat   $100$100
Power seatback bolsters, driver seat $100$100  
Power seatback bolsters, passenger seat $100$100  
Power thigh support length adjuster, driver seat $100$100  
Power thigh support length adjuster, passenger seat $100$100  
Power upper seatback recliner, driver seat $100$100  
Power upper seatback recliner, passenger seat $100$100  
Upholstered instrument panel$300$300$300  
Wood trim$300$300$300  
Suspension, Wheels, and Tires 
Adaptive dampers - electrical$500$500$500  
Electronic systems calibration selector$200$200$200  
Sport suspension (upgrade)  $0  
Transmission 
Launch control  $100  
Steering-wheel-mounted transmission controls$100$100$100  
Total Value of Features$5,935$6,535$7,435$3,875$3,950
Value of Feature Adjustments$2,060$2,660$3,560$0$75
Value of Feature Adjustments-1,901-2,454-3,2810-72

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Specifications Comparison: BMW 6-Series vs. Buick Cascada

Model Year20122018
Model6-SeriesCascada
Body2dr Convertible2dr Convertible
Wheelbase112.4 in106.1 in
Length192.8 in184.9 in
Width74.6 in72.4 in
Height53.7 in56.8 in
Curb Weight4,256 lb.3,980 lb.
Fuel Capacity18.5 gal.14.3 gal.
Row 1 Headroom40.3 in37.8 in
Row 1 Shoulder Room56.9 in54.6 in
Row 1 Legroom42.1 in42.2 in
Row 2 Headroom36.5 in36.1 in
Row 2 Shoulder Room49.6 in45.8 in
Row 2 Legroom30.5 in32.8 in
Cargo Volume10.6 ft313.4 ft3

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