Porsche Boxster Porsche Boxster 2007 BMW 6-Series Gran Coupe BMW 6-Series Gran Coupe 2015

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

Join Us

Porsche Boxster vs. BMW 6-Series Gran Coupe 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.

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

Lowest Total Price: $78,815

Porsche Boxster S   
Difference: $48,430

Lowest Total Invoice: $68,357

Porsche Boxster S   
Difference: $49,483

Calculate Payments

  Down Payment Interest Rate Term
Model Year20072015
ModelBoxster6-Series Gran Coupe
TrimSM6
Body2dr Convertible4dr Sedan
Base Price $55,500 $115,700
Base Invoice $48,415 $107,125
Adaptive Sports Seats 3,055  
Auto-dimming rearview mirror 690  
Sport Chrono Package 920  
Adaptive dampers - electrical 1,990  
Xenon HID headlights 1,090  
Ceramic brake rotors 8,150 9,250
Navigation system 3,070  
Floor mats 115  
Audio controls on steering wheel 990  
Automatic climate control, front 550  
Obstacle detection, rear 530  
Heated front seats 480  
Wood trim 890 0
Adaptive Sports Seats 2,597  
Auto-dimming rearview mirror 587  
Sport Chrono Package 782  
Adaptive dampers - electrical 1,692  
Xenon HID headlights 927  
Ceramic brake rotors 6,928 8,420
Navigation system 2,610  
Floor mats 98  
Audio controls on steering wheel 842  
Automatic climate control, front 468  
Obstacle detection, rear 451  
Heated front seats 408  
Wood trim 757 0
Options (change) 22,520 9,250
Options (change) 19,147 8,420
Destination 795 995
Gas Tax 0 1,300
Total Price $78,815 $127,245
Total Invoice $68,357 $117,840

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 Porsche Boxster dealer quotes or BMW 6-Series Gran Coupe 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: Porsche Boxster vs. BMW 6-Series Gran Coupe

Lowest Adjusted Price and Invoice: Porsche Boxster S
TrueDelta Adjusted Price Difference: $45,540
TrueDelta Adjusted Invoice Difference: $46,807
Model Year20072015
ModelBoxster6-Series Gran Coupe
TrimSM6
Body2dr Convertible4dr Sedan
Engine295hp H6560hp V8
TransmissionM6S7
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)230, 7205, 9
Tire (rear if not all the same)235/40-18265/35-20
Total Price$78,815$127,245
Adjustments for Features0-2,890
Feature-Adjusted Total Price$78,815$124,355
Total Invoice$68,357$117,840
Adjustments for Features0-2,676
Feature-Adjusted Total Invoice$68,357$115,164

Return to top

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

Model Year20072015
ModelBoxster6-Series Gran Coupe
TrimSM6
Body2dr Convertible4dr Sedan
Transmission and Drivetrain 
6-speed manual$150 
7-speed automated manual $1200
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
Roll bar$200 
Side curtain airbags $350
Cargo Management 
Cargo mat $40
Cargo net$40 
Rear seat pass-through $100
Ski sack $50
Climate Control 
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
Power convertible top$4000 
Retractable rear spoiler$400 
Infotainment 
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
S Voice support $0
Satellite radio $200
Siri Eyes Free support $0
Surround sound $250
Telematics service, such as OnStar $200
Traffic + travel information $25
Voice control for external devices $0
Voice control for nav and audio $100
Instruments, Lights, and Mirrors 
Automatic headlights $125
Chronometer$100 
Cornering lights $50
Fog light, rear$100 
Fog lights$125 
Mirror tilt-down in reverse $25
Power-folding mirrors $50
Steering-linked headlights $150
Turn signals on or near mirrors $25
Seats and Interior Trim 
Center armrest(s), second row $50
Folding second row seats $300
Illuminated door sill trim plates $200
Memory system, passenger seat $150
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
Upholstered instrument panel $300
Suspension, Wheels, and Tires 
Sport suspension (upgrade) $0
Transmission 
Launch control $100
Steering-wheel-mounted transmission controls $100
Total Value of Features$5,580$8,470
Value of Feature Adjustments$0$2,890
Value of Feature Adjustments0-2,676

Return to top

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

Model Year20072015
ModelBoxster6-Series Gran Coupe
Body2dr Convertible4dr Sedan
Wheelbase95.1 in116.9 in
Length170.4 in197.2 in
Width70.9 in74.6 in
Height51.0 in54.8 in
Curb Weight2,856 lb.4,192 lb.
Fuel Capacity17.0 gal.18.5 gal.
Row 1 Headroom38.4 in40.6 in
Row 1 Shoulder Room51.7 in56.7 in
Row 1 Hip Room53.4 in0.0 in
Row 1 Legroom41.6 in42.1 in
Row 2 Headroom0.0 in37.0 in
Row 2 Shoulder Room0.0 in54.6 in
Row 2 Legroom0.0 in35.3 in
Cargo Volume9.9 ft316.2 ft3

Return to top

Option Package Details
Porsche Boxster S

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%
Sport Chrono Package
FeatureValueRequested?
Chronometer100No
Electronic systems calibration selector200Yes
Total Requested20067%
Total Not Requested10033%

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 Porsche models.