BMW 6-Series Gran Coupe BMW 6-Series Gran Coupe 2017 Porsche Cayman Porsche Cayman 2008

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BMW 6-Series Gran Coupe vs. Porsche Cayman 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 Gran Coupe vs. Porsche Cayman Invoice Comparison

Lowest Total Price: $89,600

Porsche Cayman S   
Difference: $42,945

Lowest Total Invoice: $77,627

Porsche Cayman S   
Difference: $46,353

Calculate Payments

  Down Payment Interest Rate Term
Model Year20172008
Model6-Series Gran CoupeCayman
TrimM6S
Body4dr Sedan2dr Hatch
Base Price $117,500 $59,100
Base Invoice $109,955 $51,567
Wood trim 0 890
Upholstered instrument panel, leather 3,500 1,735
Ceramic brake rotors 9,250 8,150
Sport Chrono Package   920
Adaptive dampers - electrical   1,990
Adaptive Sports Seats   3,055
Auto-dimming rearview mirror   690
Xenon HID headlights   1,090
Metallic paint (extra cost)   690
Floor mats   115
Heated front seats   480
Obstacle detection, rear   530
Automatic climate control, front   550
Voice recorder   650
Navigation system   3,110
Illuminated door sill trim plates   725
Audio controls on steering wheel   990
Dual-mode exhaust, switchable   2,100
Synthetic suede headliner   1,180
Wood trim 0 757
Upholstered instrument panel, leather 3,220 1,475
Ceramic brake rotors 8,510 6,928
Sport Chrono Package   782
Adaptive dampers - electrical   1,692
Adaptive Sports Seats   2,597
Auto-dimming rearview mirror   587
Xenon HID headlights   927
Metallic paint (extra cost)   587
Floor mats   98
Heated front seats   408
Obstacle detection, rear   451
Automatic climate control, front   468
Voice recorder   553
Navigation system   2,644
Illuminated door sill trim plates   616
Audio controls on steering wheel   842
Dual-mode exhaust, switchable   1,785
Synthetic suede headliner   1,003
Options (change) 12,750 29,640
Options (change) 11,730 25,200
Destination 995 860
Gas Tax 1,300 0
Total Price $132,545 $89,600
Total Invoice $123,980 $77,627

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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 Gran Coupe dealer quotes or Porsche Cayman dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: BMW 6-Series Gran Coupe vs. Porsche Cayman

Lowest Adjusted Price and Invoice: Porsche Cayman S
TrueDelta Adjusted Price Difference: $35,055
TrueDelta Adjusted Invoice Difference: $38,973
Model Year20172008
Model6-Series Gran CoupeCayman
TrimM6S
Body4dr Sedan2dr Hatch
Engine560hp V8295hp H6
TransmissionS7M6
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)205, 9230, 7
Tire (rear if not all the same)265/35-20235/40-18
Total Price$132,545$89,600
Adjustments for Features-7,8900
Feature-Adjusted Total Price$124,655$89,600
Total Invoice$123,980$77,627
Adjustments for Features-7,3800
Feature-Adjusted Total Invoice$116,600$77,627

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Features Comparison: BMW 6-Series Gran Coupe vs. Porsche Cayman

Model Year20172008
Model6-Series Gran CoupeCayman
TrimM6S
Body4dr Sedan2dr Hatch
Transmission and Drivetrain 
7-speed automated manual$1200 
6-speed manual $150
RWD$0$0
Accessories 
Power door closers$300 
Power rear side windows$200 
Proximity key$250 
Remote app$25 
Remote window/roof operation$15 
Tilt/telescoping steering wheel, manual $250
Tilt/telescoping steering wheel, power$350 
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0 
Brake assist$50 
Knee airbag, driver$75 
Knee airbag, passenger$75 
Obstacle detection, front$150 
Rearview camera$200 
Side curtain airbags$350 
Cargo Management 
Cargo mat$40 
Cargo net $40
Rear seat pass-through$100 
Ski sack$50 
Climate Control 
Automatic air recirculation$100 
Dual-zone climate control$125 
Rear air vents with automatic controls$250 
Rear dual-zone climate control$125 
Residual heat$50 
Water-repellent front-door glass $15
Drivetrain 
Active rear differential$500 
Engine / Motor 
Automatic start / stop$150 
Mid-engine configuration $0
Regenerative braking$0 
Exterior 
Carbon fiber roof$0 
Painted brake calipers (optional)$0 
Retractable rear spoiler $400
Infotainment 
4G LTE connectivity$0 
App support$0 
Aux input$50 
Bluetooth audio streaming$25 
Bluetooth cell phone link$100 
Concierge Services - 3 year subscription$150 
DVD-compatible player$0 
Handwriting recognition$200 
HD radio$50 
In-vehicle Internet$150 
Media drive$15 
MP3-compatible player$50 
Navigation map updates, three years$0 
S Voice support$0 
Satellite radio - one year subscription$250 
Siri Eyes Free support$0 
SMS text-to-speech reader$25 
Surround sound$250 
Telematics service, such as OnStar$200 
Text dictation$50 
Traffic + travel information$25 
USB port$25 
Voice control for external devices$0 
Voice control for nav and audio$100 
Wi-Fi hotspot$50 
Wireless charging station$75 
Instruments, Lights, and Mirrors 
Auto-dimming headlights$200 
Automatic headlights$125 
Chronometer $100
Cornering lights$50 
Fog light, rear $100
Fog lights $125
LED headlights$1000 
Mirror tilt-down in reverse$25 
Power-folding mirrors$50 
Steering-linked headlights$150 
Turn signals on or near mirrors$25 
Xenon HID headlights $500
Seats and Interior Trim 
Center armrest(s), second row$50 
Folding second row seats$300 
Memory system, passenger seat$150 
Metal pedals $75
No leather in second row $-300
Power 4-way lumbar adjuster, passenger seat$150 
Power headrest height adjuster, driver seat$50 
Power headrest height adjuster, passenger seat$50 
Power thigh bolsters, driver seat $100
Power thigh bolsters, passenger seat $100
Power thigh support length adjuster, driver seat$100 
Power thigh support length adjuster, passenger seat$100 
Power upper seatback recliner, driver seat$100 
Power upper seatback recliner, passenger seat$100 
Suspension, Wheels, and Tires 
Sport suspension (upgrade)$0 
Transmission 
Launch control$100 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$9,545$1,655
Value of Feature Adjustments$7,890$0
Value of Feature Adjustments-7,3800

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Specifications Comparison: BMW 6-Series Gran Coupe vs. Porsche Cayman

Model Year20172008
Model6-Series Gran CoupeCayman
Body4dr Sedan2dr Hatch
Wheelbase116.9 in95.1 in
Length197.2 in170.9 in
Width74.6 in70.9 in
Height54.8 in51.4 in
Curb Weight4,192 lb.2,966 lb.
Fuel Capacity18.5 gal.17.0 gal.
Row 1 Headroom40.6 in0.0 in
Row 1 Shoulder Room56.7 in0.0 in
Row 1 Legroom42.1 in0.0 in
Row 2 Headroom37.0 in0.0 in
Row 2 Shoulder Room54.6 in0.0 in
Row 2 Legroom35.3 in0.0 in
Cargo Volume16.2 ft314.5 ft3

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Option Package Details
Porsche Cayman S

Auto-dimming rearview mirror
FeatureValueRequested?
Auto-dimming rearview mirror150Yes
Rain-sensing wipers100Yes
Auto-dimming driver-side mirror75Yes
Auto-dimming passenger-side mirror75Yes
Total Requested400100%
Total Not Requested00%
Xenon HID headlights
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50Yes
Total Requested550100%
Total Not Requested00%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather1000Yes
Leather upholstery, extended coverage0No
Total Requested1000100%
Total Not Requested00%
Sport Chrono Package
FeatureValueRequested?
Chronometer100No
Electronic systems calibration selector200Yes
Total Requested20067%
Total Not Requested10033%
Adaptive Sports Seats
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Front sport buckets100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power fore-aft adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power height adjuster, passenger seat50Yes
Power tilt adjuster, passenger seat100Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
Total Requested115085%
Total Not Requested20015%

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