Mercedes-Benz GLS Mercedes-Benz GLS 2017 Porsche Cayman Porsche Cayman 2015

We are 103,000+ car owners sharing real-world car information.

Join Us

Mercedes-Benz GLS 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.

Mercedes-Benz GLS vs. Porsche Cayman Invoice Comparison

Lowest Total Price: $79,775

Porsche Cayman   
Difference: $4,380

Calculate Payments

  Down Payment Interest Rate Term
Model Year201720172017201520152015
ModelGLSGLSGLSCaymanCaymanCayman
TrimGLS450GLS550AMG GLS63BaseSGTS
Body4dr SUV4dr SUV4dr SUV2dr Hatch2dr Hatch2dr Hatch
Base Price $68,700 $93,850 $124,100 $52,600 $63,800 $75,200
Obstacle detection, rear 970          
Premium 1 Package 3,830          
Lighting Package 1,390          
designo Edition 4,900 4,200        
Multicontour seats 1,100          
Metallic paint (extra cost) 720     710 710 710
Cooled or ventilated front seats 570         730
Heated steering wheel 250 250   270 270 270
Adaptive dampers - electrical 800     1,790 1,790  
Painted brake calipers (optional)     0      
Adaptive cruise control, all-speed       2,170 2,170 2,170
Infotainment Package       3,990 3,990 3,990
Adaptive sport seats plus       3,825 3,825 3,025
Premium Package Plus       3,620 2,950 1,965
Upholstered instrument panel, leather       2,160 2,160  
Wood trim       1,790 1,790  
Illuminated door sill trim plates       825 825 825
Audio controls on steering wheel       615 615 165
Rearview camera       1,515 1,515 1,515
Synthetic suede headliner       1,180 1,180  
Auto-dimming headlights       520 520 520
Voice control for nav and audio       520 520 520
Rear wiper       360 360 360
Power-folding mirrors       320 320 320
Bose 505W 10 speakers         0  
Bright-finished exhaust tip(s)           650
Obstacle detection, rear 902          
Premium 1 Package 3,562          
Lighting Package 1,293          
designo Edition 4,557 3,906        
Multicontour seats 1,023          
Metallic paint (extra cost) 670     0 0 0
Cooled or ventilated front seats 530         0
Heated steering wheel 233 233   0 0 0
Adaptive dampers - electrical 744     0 0  
Painted brake calipers (optional)     0      
Adaptive cruise control, all-speed       0 0 0
Infotainment Package       0 0 0
Adaptive sport seats plus       0 0 0
Premium Package Plus       0 0 0
Upholstered instrument panel, leather       0 0  
Wood trim       0 0  
Illuminated door sill trim plates       0 0 0
Audio controls on steering wheel       0 0 0
Rearview camera       0 0 0
Synthetic suede headliner       0 0  
Auto-dimming headlights       0 0 0
Voice control for nav and audio       0 0 0
Rear wiper       0 0 0
Power-folding mirrors       0 0 0
Bose 505W 10 speakers         0  
Bright-finished exhaust tip(s)           0
Options (change) 14,530 4,450 0 26,180 25,510 17,735
Options (change) 13,514 4,139 0 0 0 0
Destination 925 925 925 995 995 995
Total Price $84,155 $99,225 $125,025 $79,775 $90,305 $93,930

Return to top

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

Dealer Price Quotes

Want to find out how much dealers are willing to discount these cars?

Request free, no-obligation Mercedes-Benz GLS dealer quotes or Porsche Cayman dealer quotes from dealers using our car quote form.

The process is easy and takes just a minute or two. You'll receive price quotes from local approved dealers within 48 hours.

TrueDelta Value Comparison: Mercedes-Benz GLS vs. Porsche Cayman

Lowest Adjusted Price: Mercedes-Benz GLS GLS450
Lowest Adjusted Invoice: Porsche Cayman GTS
TrueDelta Adjusted Price Difference: $6,470
TrueDelta Adjusted Invoice Difference: $67,251
Model Year201720172017201520152015
ModelGLSGLSGLSCaymanCaymanCayman
TrimGLS450GLS550AMG GLS63BaseSGTS
Body4dr SUV4dr SUV4dr SUV2dr Hatch2dr Hatch2dr Hatch
Engine362hp V6449hp V8550hp V8275hp H6325hp H6340hp H6
TransmissionT9T9T7M6M6M6
DrivetrainAWDAWDAWDRWDRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)80, 8830, 14830, 14235, 9445, 10445, 10
Tire (rear if not all the same)275/55-19295/40-21295/40-21235/45-18235/40-19235/35-20
Total Price$84,155$99,225$125,025$79,775$90,305$93,930
Adjustments for Features-10,850-12,790-15,2400-250-1,375
Feature-Adjusted Total Price$73,305$86,435$109,785$79,775$90,055$92,555
Cost Above Minimum$0$13,130$36,480$0$10,280$12,780

Return to top

Features Comparison: Mercedes-Benz GLS vs. Porsche Cayman

Model Year201720172017201520152015
ModelGLSGLSGLSCaymanCaymanCayman
TrimGLS450GLS550AMG GLS63BaseSGTS
Body4dr SUV4dr SUV4dr SUV2dr Hatch2dr Hatch2dr Hatch
Transmission and Drivetrain 
9-speed manually-shiftable automatic$1400$1400    
7-speed manually-shiftable automatic  $1200   
6-speed manual   $150$150$150
AWD$1700$1700$1700   
RWD   $0$0$0
Accessories 
AC power outlet$100$100$100   
Adaptive cruise control, all-speed  $850$850$850$850
Cruise control$150$150    
Heated / cooled cup holders, front row $75$75   
Heated steering wheel$100$100 $100$100$100
Power door closers $300$300   
Power flip-out rear side windows$125$125$125   
Power liftgate$350$350$350   
Power rear side windows$200$200$200   
Remote app$25$25$25   
Remote climate control$25$25$25   
Remote start via app$75$75$75   
Remote window/roof operation$15$15$15   
Semi-automated parking system$500$500$500   
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0$0$0   
Around view cameras $500$500   
Automatic braking, high-speed or partial  $200$200$200$200
Automatic braking, low-speed  $200   
Blind spot collision prevention  $150   
Blind spot warning system$200$200$200   
Driver drowsiness monitor$150$150$150   
Hill descent control$250$250$250   
Knee airbag, passenger   $75$75$75
Lane departure prevention  $150   
Lane departure warning$200$200$200   
Rear side airbags$300$300$300   
Rearview camera$200  $200$200$200
Rollover sensor$50$50$50   
Side curtain airbags   $350$350$350
Side curtain airbags, three rows$500$500$500   
Temporary spare tire$150$150$150   
Trailer sway control$25$25$25   
Cargo Management 
Aluminum roof rails$250$250$250   
Cargo cover$75$75$75   
Cargo net $40$40$40$40$40
Console with shifter   $150$150$150
Console without shifter$150$150$150   
Climate Control 
Rear air vents$100     
Rear air vents with automatic controls $250$250   
Rear HVAC unit $400$400   
Residual heat   $50$50$50
Water-repellent front-door glass   $15$15$15
Drivetrain 
Electronically-variable engine mounts (performance-oriented)     $500
Engine / Motor 
Dual-mode exhaust, switchable     $500
Mid-engine configuration   $0$0$0
Regenerative braking   $0$0$0
Exterior 
Black exterior trim (optional)     $0
Deep-tinted rear windows$275$275$275   
Glass roof panel(s)  $300   
Laminated front side windows$200$200$200   
Painted brake calipers (optional)  $0 $0$0
Panoramic sunroof  $1200   
Rear bumper protector$40$40$40   
Rear spoiler$200$200$200   
Retractable rear spoiler   $400$400$400
Running boards $350$350   
Sunroof$900$900    
Wheel-lip moldings $75$75   
Infotainment 
Android Auto support$100$100$100   
Apple CarPlay support$100$100$100   
Aux input   $50$50$50
DVD-Audio-compatible player   $0$0$0
DVD-compatible player$0$0$0   
In-vehicle Internet$150$150$150   
Navigation map updates, three years$0$0$0   
Off-road navigation system   $0$0$0
SD Card slot$25$25$25   
SMS text-to-speech reader$25$25$25   
Surround sound $250$250 $250$250
Telematics service, such as OnStar, with navigation$225$225$225   
Traffic + travel information$25$25$25   
Traffic information   $25$25$25
Wi-Fi hotspot$50$50$50   
Instruments, Lights, and Mirrors 
Adaptive headlights$200$200$200   
Analog clock$25$25$25   
Auto-dimming passenger-side mirror   $75$75$75
Chronometer     $100
Compass$0$0$0   
Fog lights   $125$125 
Headlight washers   $50$50$50
Interior ambient lighting   $150$150$150
Interior ambient lighting, configurable$150$150$150   
LED headlights$1000$1000$1000   
Mirror tilt-down in reverse$25$25$25   
Performance meter     $150
Steering-linked headlights   $150$150$150
Turn signals on or near mirrors$25$25$25   
Xenon HID headlights   $500$500$500
Seats and Interior Trim 
Center armrest(s), second row$50$50$50   
Folding second row seats$300$300$300   
Heated second row seats  $200   
Leather door panel trim$250$250$250$250$250 
Leather seating surfaces, third-row seats$200$200$200   
Manual recliner, second row seats$75$75$75   
Massage, driver seat$100$100$100   
Massage, passenger seat$100$100$100   
Memory system, passenger seat$150$150$150   
Metal pedals   $75$75$75
No leather in second row   $-300$-300$-300
Power headrest height adjuster, driver seat$50$50$50   
Power headrest height adjuster, passenger seat$50$50$50   
Power release, second row seats  $50   
Power thigh bolsters, driver seat   $100$100$100
Power thigh bolsters, passenger seat   $100$100$100
Power-folding third row seats$1000$1000$1000   
Synthetic suede door panel trim     $250
Wood trim$300$300$300$300$300 
Suspension, Wheels, and Tires 
Active stabilizer bars  $500   
Air suspension, auto-leveling and height adjustable$1000$1000$1000   
Crosswind stabilization$50$50$50   
Electronic systems calibration selector$200$200$200  $200
Sport suspension (upgrade)  $0   
Transmission 
Launch control     $100
Steering-wheel-mounted transmission controls$100$100$100   
Total Value of Features$15,080$17,020$19,470$4,230$4,480$5,605
Value of Feature Adjustments$10,850$12,790$15,240$0$250$1,375
Value of Feature Adjustments-10,099-11,903-14,1810-3-15

Return to top

Specifications Comparison: Mercedes-Benz GLS vs. Porsche Cayman

Model Year20172015
ModelGLSCayman
Body4dr SUV2dr Hatch
Wheelbase121.1 in97.4 in
Length202.0 in172.4 in
Width76.1 in70.9 in
Height72.8 in50.9 in
Curb Weight5,401 lb.2,889 lb.
Fuel Capacity26.4 gal.16.9 gal.
Row 1 Headroom41.2 in0.0 in
Row 1 Shoulder Room58.5 in0.0 in
Row 1 Legroom40.3 in0.0 in
Row 2 Headroom40.0 in0.0 in
Row 2 Shoulder Room58.3 in0.0 in
Row 2 Legroom38.5 in0.0 in
Row 3 Headroom38.9 in0.0 in
Row 3 Shoulder Room50.5 in0.0 in
Row 3 Legroom35.0 in0.0 in
Cargo Volume,
Minimum
16.0 ft315.0 ft3
Cargo Volume,
Behind R2
49.4 ft315.0 ft3
Cargo Volume,
Maximum
93.8 ft315.0 ft3

Return to top

Option Package Details
Mercedes-Benz GLS GLS450

Premium 1 Package
FeatureValueRequested?
Power headrest height adjuster, passenger seat50No
Power 4-way lumbar adjuster, passenger seat150Yes
Memory system, passenger seat150No
Satellite radio200Yes
Proximity key250Yes
Lane departure warning system200No
Blind spot warning system200No
Illuminated door sill trim plates100Yes
Smartphone integration0No
Wi-Fi hotspot50No
Interior ambient lighting, configurable150No
Apple CarPlay support100No
Android Auto support100No
Navigation map updates, three years0No
Media drive15Yes
Traffic + travel information25Yes
In-vehicle Internet150No
App support0Yes
Navigation system600Yes
Voice control for nav and audio100Yes
Total Requested144056%
Total Not Requested115044%
Lighting Package
FeatureValueRequested?
Auto-dimming headlights200Yes
iPod integration100Yes
LED headlights1000No
Adaptive headlights200No
Total Requested30020%
Total Not Requested120080%
designo Edition
FeatureValueRequested?
Upgraded leather upholstery0No
Leather upholstery, extended coverage900Yes
Special interior trim0No
Synthetic suede headliner650Yes
Leather door panel trim250Yes
Upholstered instrument panel, leather700Yes
Leather seating surfaces, third-row seats200No
Total Requested250093%
Total Not Requested2007%
Multicontour seats
FeatureValueRequested?
Power thigh support length adjuster, driver seat100Yes
Power seatback bolsters, driver seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Power thigh support length adjuster, passenger seat100Yes
Power seatback bolsters, passenger seat100Yes
Massage, driver seat100No
Massage, passenger seat100No
Front sport buckets100Yes
Total Requested65076%
Total Not Requested20024%

Option Package Details
Mercedes-Benz GLS GLS550

designo Edition
FeatureValueRequested?
Upgraded leather upholstery0No
Leather upholstery, extended coverage0Yes
Special interior trim0No
Synthetic suede headliner650Yes
Leather door panel trim250Yes
Upholstered instrument panel, leather700Yes
Total Requested1600100%
Total Not Requested00%

Option Package Details
Porsche Cayman

Adaptive cruise control, all-speed
FeatureValueRequested?
Adaptive cruise control, all-speed700Yes
Radar- or camera-based collision preparation system0Yes
Automatic braking, high-speed200Yes
Forward collision warning200Yes
Total Requested1100100%
Total Not Requested00%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather800Yes
Leather upholstery, extended coverage0Yes
Leather door panel trim250Yes
Total Requested1050100%
Total Not Requested00%
Rearview camera
FeatureValueRequested?
Rearview camera200Yes
Obstacle detection, front150Yes
Obstacle detection, rear250Yes
Total Requested600100%
Total Not Requested00%
Infotainment Package
FeatureValueRequested?
Media drive15Yes
App support0Yes
Navigation system600Yes
Traffic information25Yes
Off-road navigation system0No
USB port25Yes
Satellite radio200Yes
DVD-Audio-compatible player0Yes
HD radio50Yes
Unbranded, 235W, 9 speakers350No
Total Requested91572%
Total Not Requested35028%
Adaptive sport seats plus
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Power thigh support adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power height adjuster, passenger seat50Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
Front sport buckets100Yes
Total Requested160089%
Total Not Requested20011%
Premium Package Plus
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Proximity key250Yes
Interior ambient lighting150Yes
Residual heat50No
Automatic air recirculation100Yes
Automatic climate control, front200Yes
Heated front seats200Yes
Dual-zone climate control125Yes
Auto-dimming passenger-side mirror75No
Auto-dimming rearview mirror150Yes
Rain-sensing wipers100Yes
Auto-dimming driver-side mirror75Yes
Steering-linked headlights150Yes
Xenon HID headlights500Yes
Headlight washers50No
Total Requested230093%
Total Not Requested1757%

Option Package Details
Porsche Cayman S

Adaptive cruise control, all-speed
FeatureValueRequested?
Adaptive cruise control, all-speed700Yes
Radar- or camera-based collision preparation system0Yes
Automatic braking, high-speed200Yes
Forward collision warning200Yes
Total Requested1100100%
Total Not Requested00%
Bose, 445W, 10 speakers (with subwoofer)
FeatureValueRequested?
Bose, 445W, 10 speakers (with subwoofer)350No
Surround sound250Yes
Total Requested25042%
Total Not Requested35058%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather800Yes
Leather upholstery, extended coverage0Yes
Total Requested800100%
Total Not Requested00%
Rearview camera
FeatureValueRequested?
Rearview camera200Yes
Obstacle detection, front150Yes
Obstacle detection, rear250Yes
Total Requested600100%
Total Not Requested00%
Infotainment Package
FeatureValueRequested?
Media drive15Yes
App support0Yes
Navigation system600Yes
Traffic information25Yes
Off-road navigation system0No
USB port25Yes
Satellite radio200Yes
DVD-Audio-compatible player0Yes
HD radio50Yes
Total Requested915100%
Total Not Requested00%
Adaptive sport seats plus
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Power thigh support adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power height adjuster, passenger seat50Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
Front sport buckets100Yes
Total Requested160089%
Total Not Requested20011%
Premium Package Plus
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Proximity key250Yes
Interior ambient lighting150Yes
Residual heat50No
Automatic air recirculation100Yes
Automatic climate control, front200Yes
Heated front seats200Yes
Dual-zone climate control125Yes
Auto-dimming passenger-side mirror75No
Auto-dimming rearview mirror150Yes
Rain-sensing wipers100Yes
Auto-dimming driver-side mirror75Yes
Steering-linked headlights150Yes
Headlight washers50No
Total Requested180091%
Total Not Requested1759%

Option Package Details
Porsche Cayman GTS

Adaptive cruise control, all-speed
FeatureValueRequested?
Adaptive cruise control, all-speed700Yes
Radar- or camera-based collision preparation system0Yes
Automatic braking, high-speed200Yes
Forward collision warning200Yes
Total Requested1100100%
Total Not Requested00%
Rearview camera
FeatureValueRequested?
Rearview camera200Yes
Obstacle detection, front150Yes
Obstacle detection, rear250Yes
Total Requested600100%
Total Not Requested00%
Infotainment Package
FeatureValueRequested?
Surround sound250Yes
Performance meter150No
Bose, 445W, 10 speakers (with subwoofer)350No
Media drive15Yes
App support0Yes
Navigation system600Yes
Traffic information25Yes
Off-road navigation system0No
USB port25Yes
Satellite radio200Yes
DVD-Audio-compatible player0Yes
HD radio50Yes
Total Requested116570%
Total Not Requested50030%
Adaptive sport seats plus
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Power thigh support adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power height adjuster, passenger seat50Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
Total Requested150088%
Total Not Requested20012%
Premium Package Plus
FeatureValueRequested?
Proximity key250Yes
Interior ambient lighting150Yes
Residual heat50No
Automatic air recirculation100Yes
Automatic climate control, front200Yes
Heated front seats200Yes
Dual-zone climate control125Yes
Auto-dimming passenger-side mirror75No
Auto-dimming rearview mirror150Yes
Rain-sensing wipers100Yes
Auto-dimming driver-side mirror75Yes
Total Requested135092%
Total Not Requested1258%

Was this information useful?

We're glad we could help! Share this page:

We're so sorry! Tell us how we can improve it.

See TrueDelta's information for all SUVs
See TrueDelta's information for all Mercedes-Benz models.