

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.
Lowest Total Price: $36,640 GMC Envoy SLT | |||||||
Difference: $28,735 | |||||||
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Calculate Payments |
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Model Year | 2016 | 2016 | 2016 | 2016 | 2016 | 2009 | 2009 |
Model | Boxster | Boxster | Boxster | Boxster | Boxster | Envoy | Envoy |
Trim | Base | Black Edition | S | GTS | Spyder | SLT | Denali |
Body | 2dr Convertible | 2dr Convertible | 2dr Convertible | 2dr Convertible | 2dr Convertible | 4dr SUV | 4dr SUV |
Base Price | $52,100 | $59,100 | $63,900 | $74,600 | $82,100 | $33,480 | $36,535 |
Power sport seats | 2,320 | 2,320 | 2,320 | ||||
Convenience Package | 900 | ||||||
Torque vectoring, brake-based | 1,320 | 1,320 | 1,320 | 1,320 | |||
Adaptive dampers - electrical | 1,790 | 1,790 | 1,790 | ||||
Infotainment Package | 3,990 | 3,990 | |||||
Metallic paint (extra cost) | 710 | 710 | 710 | 710 | 710 | ||
Wood/leather-wrapped steering wheel | 1,250 | 1,250 | |||||
Satellite radio | 670 | 670 | |||||
Audio controls on steering wheel | 365 | 165 | |||||
Premium Package | 1,170 | 965 | |||||
Bose 505W 10 speakers | 0 | ||||||
Adaptive sport seats plus | 3,025 | 2,635 | |||||
Automatic climate control, front | 760 | ||||||
PCM | 2,965 | ||||||
Heated front seats | 530 | ||||||
Limited-slip rear differential | 270 | ||||||
Navigation system | 2,145 | 2,145 | |||||
Power sport seats | 0 | 0 | 0 | ||||
Convenience Package | 0 | ||||||
Torque vectoring, brake-based | 0 | 0 | 0 | 0 | |||
Adaptive dampers - electrical | 0 | 0 | 0 | ||||
Infotainment Package | 0 | 0 | |||||
Metallic paint (extra cost) | 0 | 0 | 0 | 0 | 0 | ||
Wood/leather-wrapped steering wheel | 0 | 0 | |||||
Satellite radio | 0 | 0 | |||||
Audio controls on steering wheel | 0 | 0 | |||||
Premium Package | 0 | 0 | |||||
Bose 505W 10 speakers | 0 | ||||||
Adaptive sport seats plus | 0 | 0 | |||||
Automatic climate control, front | 0 | ||||||
PCM | 0 | ||||||
Heated front seats | 0 | ||||||
Limited-slip rear differential | 224 | ||||||
Navigation system | 1,780 | 1,780 | |||||
Options (change) | 12,280 | 7,175 | 12,550 | 6,855 | 7,600 | 2,415 | 2,145 |
Options (change) | 0 | 0 | 0 | 0 | 0 | 2,004 | 1,780 |
Destination | 995 | 995 | 995 | 995 | 995 | 745 | 745 |
Total Price | $65,375 | $67,270 | $77,445 | $82,450 | $90,695 | $36,640 | $39,425 |
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Lowest Adjusted Price: GMC Envoy SLT | |||||||
Lowest Adjusted Invoice: Porsche Boxster GTS | |||||||
TrueDelta Adjusted Price Difference: $25,240 | |||||||
TrueDelta Adjusted Invoice Difference: $33,140 | |||||||
Model Year | 2016 | 2016 | 2016 | 2016 | 2016 | 2009 | 2009 |
Model | Boxster | Boxster | Boxster | Boxster | Boxster | Envoy | Envoy |
Trim | Base | Black Edition | S | GTS | Spyder | SLT | Denali |
Body | 2dr Convertible | 2dr Convertible | 2dr Convertible | 2dr Convertible | 2dr Convertible | 4dr SUV | 4dr SUV |
Engine | 265hp H6 | 265hp H6 | 315hp H6 | 330hp H6 | 375hp H6 | 285hp I6 | 300hp V8 |
Transmission | M6 | M6 | M6 | M6 | M6 | A4 | A4 |
Drivetrain | RWD | RWD | RWD | RWD | RWD | RWD | RWD |
EPA Fuel Economy (city/highway) | / MPG | / MPG | / MPG | / MPG | / MPG | / MPG | / MPG |
Audio (watts, speakers) | 185, 7 | 185, 7 | 445, 10 | 185, 7 | 185, 7 | 275, 6 | 275, 6 |
Tire (rear if not all the same) | 235/45-18 | 235/35-20 | 235/40-19 | 235/35-20 | 235/35-20 | 245/60-18 | 245/60-18 |
Total Price | $65,375 | $67,270 | $77,445 | $82,450 | $90,695 | $36,640 | $39,425 |
Adjustments for Features | -3,495 | -4,845 | -5,095 | -6,805 | -3,595 | 0 | -1,490 |
Feature-Adjusted Total Price | $61,880 | $62,425 | $72,350 | $75,645 | $87,100 | $36,640 | $37,935 |
Cost Above Minimum | $0 | $545 | $10,470 | $13,765 | $25,220 | $0 | $1,295 |
Model Year | 2016 | 2016 | 2016 | 2016 | 2016 | 2009 | 2009 |
Model | Boxster | Boxster | Boxster | Boxster | Boxster | Envoy | Envoy |
Trim | Base | Black Edition | S | GTS | Spyder | SLT | Denali |
Body | 2dr Convertible | 2dr Convertible | 2dr Convertible | 2dr Convertible | 2dr Convertible | 4dr SUV | 4dr SUV |
Transmission and Drivetrain | |||||||
6-speed manual | $150 | $150 | $150 | $150 | $150 | ||
4-speed automatic | $800 | $800 | |||||
RWD | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
Accessories | |||||||
Air compressor | $35 | ||||||
Heated steering wheel | $100 | $100 | |||||
Power rear side windows | $200 | $200 | |||||
Power-adjustable pedals | $125 | ||||||
Tilt steering wheel, manual | $150 | $150 | |||||
Tilt/telescoping steering wheel, power | $350 | $350 | $350 | $350 | $350 | ||
Wind blocker, small | $100 | $100 | $100 | $100 | $100 | ||
Brakes, Airbags, and Other Safety | |||||||
Brake assist | $50 | $50 | $50 | $50 | $50 | ||
Front side airbags | $350 | $350 | $350 | $350 | $350 | ||
Full-size spare tire | $225 | $225 | |||||
Knee airbag, driver | $75 | $75 | $75 | $75 | $75 | ||
Knee airbag, passenger | $75 | $75 | $75 | $75 | $75 | ||
Obstacle detection, front | $150 | ||||||
Obstacle detection, rear | $250 | ||||||
Roll bar | $200 | $200 | $200 | $200 | $200 | ||
Torque vectoring, brake-based | $100 | $100 | $100 | $100 | $100 | ||
Cargo Management | |||||||
Cargo cover | $75 | ||||||
Cargo mat | $40 | ||||||
Cargo net | $40 | $40 | $40 | $40 | $40 | $40 | |
Class IV trailer hitch | $300 | $300 | |||||
Liftglass or two-piece tailgate | $150 | $150 | |||||
Roof rack | $300 | $300 | |||||
Trailering equipment (7 wire) | $150 | $150 | |||||
Climate Control | |||||||
Automatic air recirculation | $100 | $100 | $100 | $100 | $100 | ||
Heated windshield washer nozzles | $15 | $15 | $15 | $15 | $15 | ||
Interior air filter | $0 | $0 | $0 | $0 | $0 | ||
Rain-sensing wipers | $175 | $175 | $175 | ||||
Rear wiper | $175 | $175 | |||||
Residual heat | $50 | $50 | $50 | $50 | $50 | ||
Variable intermittent wipers | $75 | $75 | $75 | $75 | |||
Water-repellent front-door glass | $15 | $15 | $15 | $15 | $15 | ||
Drivetrain | |||||||
Electronically-variable engine mounts (performance-oriented) | $500 | $500 | |||||
Engine / Motor | |||||||
Automatic start / stop | $150 | $150 | $150 | $150 | |||
Dual-mode exhaust, switchable | $500 | $500 | |||||
Mid-engine configuration | $0 | $0 | $0 | $0 | $0 | ||
Regenerative braking | $0 | $0 | $0 | $0 | $0 | ||
Exterior | |||||||
Black exterior trim (optional) | $0 | $0 | |||||
Bodyside cladding | $350 | ||||||
Bodyside moldings | $75 | ||||||
Bright-finished exhaust tip(s) | $25 | $25 | $25 | ||||
Convertible top | $3000 | ||||||
Deep-tinted rear windows | $275 | $275 | |||||
Laminated front side windows | $200 | ||||||
Painted brake calipers (optional) | $0 | $0 | $0 | ||||
Power convertible top | $4000 | $4000 | $4000 | $4000 | |||
Rear bumper protector | $40 | $40 | |||||
Retractable rear spoiler | $400 | $400 | $400 | $400 | $400 | ||
Running boards | $350 | ||||||
Infotainment | |||||||
App support | $0 | $0 | |||||
Audio controls on steering wheel | $125 | $125 | $125 | $125 | $125 | $125 | |
Aux input | $50 | $50 | $50 | $50 | $50 | ||
Bluetooth audio streaming | $25 | $25 | $25 | $25 | $25 | ||
DVD-Audio-compatible player | $0 | $0 | $0 | $0 | |||
HD radio | $50 | $50 | |||||
Media drive | $15 | $15 | $15 | $15 | |||
MP3-compatible player | $50 | $50 | $50 | $50 | $50 | ||
Navigation system | $600 | $600 | $600 | $600 | $600 | $600 | |
Off-road navigation system | $0 | $0 | $0 | $0 | |||
Rear seat audio controls | $25 | $25 | |||||
Satellite radio | $200 | $200 | $200 | $200 | $200 | $200 | |
Surround sound | $250 | ||||||
Telematics service, such as OnStar | $200 | $200 | |||||
Traffic information | $25 | $25 | $25 | $25 | |||
USB port | $25 | $25 | $25 | $25 | |||
Instruments, Lights, and Mirrors | |||||||
Auto-dimming driver-side mirror | $75 | $75 | $75 | ||||
Auto-dimming passenger-side mirror | $75 | $75 | $75 | ||||
Auto-dimming rearview mirror | $150 | $150 | $150 | $150 | $150 | ||
Chronometer | $100 | $100 | |||||
Compass | $0 | $0 | |||||
Cornering lights | $50 | $50 | |||||
Fog light, rear | $100 | $100 | $100 | $100 | $100 | ||
Fog lights | $125 | $125 | |||||
Headlight washers | $50 | $50 | $50 | $50 | $50 | ||
Steering-linked headlights | $150 | $150 | $150 | ||||
Turn signals on or near mirrors | $25 | $25 | |||||
Xenon HID headlights | $500 | $500 | $500 | $500 | |||
Seats and Interior Trim | |||||||
Folding second row seats | $300 | $300 | |||||
Leather door panel trim | $250 | ||||||
Leather-wrapped steering wheel | $150 | $150 | $150 | ||||
Metal pedals | $75 | $75 | $75 | $75 | $75 | ||
No leather in second row | $-300 | $-300 | $-300 | $-300 | $-300 | ||
Power 4-way lumbar adjuster, driver seat | $150 | $150 | $150 | $150 | $150 | ||
Power 4-way lumbar adjuster, passenger seat | $150 | $150 | $150 | $150 | $150 | ||
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 bolsters, driver seat | $100 | $100 | |||||
Power thigh bolsters, passenger seat | $100 | $100 | |||||
Power thigh support length adjuster, driver seat | $100 | $100 | $100 | $100 | $100 | ||
Power thigh support length adjuster, passenger seat | $100 | $100 | $100 | $100 | $100 | ||
Synthetic suede door panel trim | $250 | $250 | |||||
Synthetic suede inserts in leather seating surfaces | $0 | $0 | |||||
Synthetic suede steering wheel | $150 | ||||||
Upholstered instrument panel, leather | $1000 | ||||||
Wood/leather-wrapped steering wheel | $150 | $150 | $150 | ||||
Suspension, Wheels, and Tires | |||||||
Adaptive dampers - electrical | $500 | $500 | $500 | $500 | |||
Alloy wheels | $350 | $350 | $350 | $350 | $350 | ||
Electronic systems calibration selector | $200 | ||||||
Polished alloy wheels | $350 | $350 | |||||
Rear air springs, auto-leveling | $350 | ||||||
Sport suspension (upgrade) | $0 | ||||||
Transmission | |||||||
Launch control | $100 | ||||||
Total Value of Features | $8,960 | $10,310 | $10,560 | $12,270 | $9,060 | $5,465 | $6,955 |
Value of Feature Adjustments | $3,495 | $4,845 | $5,095 | $6,805 | $3,595 | $0 | $1,490 |
Value of Feature Adjustments | -53 | -72 | -65 | -82 | -39 | 0 | -1,386 |
Model Year | 2016 | 2009 |
Model | Boxster | Envoy |
Body | 2dr Convertible | 4dr SUV |
Wheelbase | 97.4 in | 113.0 in |
Length | 172.2 in | 191.6 in |
Width | 70.9 in | 74.4 in |
Height | 50.5 in | 71.9 in |
Curb Weight | 2,889 lb. | 4,405 lb. |
Fuel Capacity | 16.9 gal. | 22.0 gal. |
Row 1 Headroom | 38.6 in | 40.2 in |
Row 1 Shoulder Room | 51.7 in | 58.5 in |
Row 1 Hip Room | 53.4 in | 55.5 in |
Row 1 Legroom | 42.6 in | 41.1 in |
Row 2 Headroom | 0.0 in | 39.6 in |
Row 2 Shoulder Room | 0.0 in | 58.5 in |
Row 2 Hip Room | 0.0 in | 58.1 in |
Row 2 Legroom | 0.0 in | 37.0 in |
Cargo Volume, Minimum | 9.9 ft3 | 43.7 ft3 |
Cargo Volume, Maximum | 9.9 | 80.1 ft3 |
Power sport seats | ||
Feature | Value | Requested? |
Tilt/telescoping steering wheel, power | 100 | No |
Power fore-aft adjuster, driver seat | 100 | Yes |
Power height adjuster, driver seat | 50 | Yes |
Power tilt adjuster, driver seat | 100 | Yes |
Power 4-way lumbar adjuster, driver seat | 150 | No |
Power thigh support adjuster, driver seat | 100 | No |
Power fore-aft adjuster, passenger seat | 100 | Yes |
Power 4-way lumbar adjuster, passenger seat | 150 | No |
Power thigh support adjuster, passenger seat | 100 | No |
Memory system, driver seat | 200 | Yes |
Power height adjuster, passenger seat | 50 | Yes |
Power tilt adjuster, passenger seat | 100 | Yes |
Total Requested | 700 | 54% |
Total Not Requested | 600 | 46% |
Convenience Package | ||
Feature | Value | Requested? |
Automatic climate control, front | 200 | Yes |
Heated front seats | 200 | Yes |
Dual-zone climate control | 125 | Yes |
Residual heat | 50 | No |
Automatic air recirculation | 100 | No |
Total Requested | 525 | 78% |
Total Not Requested | 150 | 22% |
Infotainment Package | ||
Feature | Value | Requested? |
Unbranded, 185W, 7 speakers | 350 | No |
App support | 0 | No |
HD radio | 50 | No |
USB port | 25 | No |
Satellite radio | 200 | Yes |
DVD-Audio-compatible player | 0 | No |
Traffic information | 25 | No |
Off-road navigation system | 0 | No |
Media drive | 15 | No |
Navigation system | 600 | Yes |
Total Requested | 800 | 63% |
Total Not Requested | 465 | 37% |
Power sport seats | ||
Feature | Value | Requested? |
Tilt/telescoping steering wheel, power | 100 | No |
Power fore-aft adjuster, driver seat | 100 | Yes |
Power height adjuster, driver seat | 50 | Yes |
Power tilt adjuster, driver seat | 100 | Yes |
Power 4-way lumbar adjuster, driver seat | 150 | No |
Power thigh support adjuster, driver seat | 100 | No |
Power fore-aft adjuster, passenger seat | 100 | Yes |
Power 4-way lumbar adjuster, passenger seat | 150 | No |
Power thigh support adjuster, passenger seat | 100 | No |
Memory system, driver seat | 200 | Yes |
Power height adjuster, passenger seat | 50 | Yes |
Power tilt adjuster, passenger seat | 100 | Yes |
Total Requested | 700 | 54% |
Total Not Requested | 600 | 46% |
Power sport seats | ||
Feature | Value | Requested? |
Tilt/telescoping steering wheel, power | 100 | No |
Power fore-aft adjuster, driver seat | 100 | Yes |
Power height adjuster, driver seat | 50 | Yes |
Power tilt adjuster, driver seat | 100 | Yes |
Power 4-way lumbar adjuster, driver seat | 150 | No |
Power thigh support adjuster, driver seat | 100 | No |
Power fore-aft adjuster, passenger seat | 100 | Yes |
Power 4-way lumbar adjuster, passenger seat | 150 | No |
Power thigh support adjuster, passenger seat | 100 | No |
Memory system, driver seat | 200 | Yes |
Power height adjuster, passenger seat | 50 | Yes |
Power tilt adjuster, passenger seat | 100 | Yes |
Total Requested | 700 | 54% |
Total Not Requested | 600 | 46% |
Premium Package | ||
Feature | Value | Requested? |
Dual-zone climate control | 125 | Yes |
Residual heat | 50 | No |
Automatic air recirculation | 100 | No |
Automatic climate control, front | 200 | Yes |
Heated front seats | 200 | Yes |
Auto-dimming driver-side mirror | 75 | No |
Auto-dimming passenger-side mirror | 75 | No |
Auto-dimming rearview mirror | 150 | Yes |
Rain-sensing wipers | 100 | No |
Headlight washers | 50 | Yes |
Steering-linked headlights | 150 | No |
Total Requested | 725 | 57% |
Total Not Requested | 550 | 43% |
Infotainment Package | ||
Feature | Value | Requested? |
App support | 0 | No |
HD radio | 50 | No |
USB port | 25 | No |
Satellite radio | 200 | Yes |
DVD-Audio-compatible player | 0 | No |
Traffic information | 25 | No |
Off-road navigation system | 0 | No |
Media drive | 15 | No |
Navigation system | 600 | Yes |
Total Requested | 800 | 87% |
Total Not Requested | 115 | 13% |
Adaptive sport seats plus | ||
Feature | Value | Requested? |
Power thigh bolsters, driver seat | 100 | No |
Power seatback bolsters, driver seat | 100 | No |
Power thigh bolsters, passenger seat | 100 | No |
Power seatback bolsters, passenger seat | 100 | No |
Power height adjuster, driver seat | 50 | Yes |
Power tilt adjuster, driver seat | 100 | Yes |
Power 4-way lumbar adjuster, driver seat | 150 | No |
Power thigh support adjuster, driver seat | 100 | No |
Power fore-aft adjuster, passenger seat | 100 | Yes |
Power 4-way lumbar adjuster, passenger seat | 150 | No |
Power thigh support adjuster, passenger seat | 100 | No |
Memory system, driver seat | 200 | Yes |
Power height adjuster, passenger seat | 50 | Yes |
Power tilt adjuster, passenger seat | 100 | Yes |
Tilt/telescoping steering wheel, power | 100 | No |
Power fore-aft adjuster, driver seat | 100 | Yes |
Total Requested | 700 | 41% |
Total Not Requested | 1000 | 59% |
Premium Package | ||
Feature | Value | Requested? |
Dual-zone climate control | 125 | Yes |
Residual heat | 50 | No |
Automatic air recirculation | 100 | No |
Automatic climate control, front | 200 | Yes |
Heated front seats | 200 | Yes |
Auto-dimming driver-side mirror | 75 | No |
Auto-dimming passenger-side mirror | 75 | No |
Auto-dimming rearview mirror | 150 | Yes |
Rain-sensing wipers | 100 | No |
Total Requested | 675 | 63% |
Total Not Requested | 400 | 37% |
Adaptive sport seats plus | ||
Feature | Value | Requested? |
Power thigh bolsters, driver seat | 100 | No |
Power seatback bolsters, driver seat | 100 | No |
Power thigh bolsters, passenger seat | 100 | No |
Power seatback bolsters, passenger seat | 100 | No |
Power height adjuster, driver seat | 50 | Yes |
Power tilt adjuster, driver seat | 100 | Yes |
Power 4-way lumbar adjuster, driver seat | 150 | No |
Power thigh support adjuster, driver seat | 100 | No |
Power fore-aft adjuster, passenger seat | 100 | Yes |
Power 4-way lumbar adjuster, passenger seat | 150 | No |
Power thigh support adjuster, passenger seat | 100 | No |
Memory system, driver seat | 200 | Yes |
Power height adjuster, passenger seat | 50 | Yes |
Power tilt adjuster, passenger seat | 100 | Yes |
Tilt/telescoping steering wheel, power | 100 | No |
Power fore-aft adjuster, driver seat | 100 | Yes |
Total Requested | 700 | 41% |
Total Not Requested | 1000 | 59% |
PCM | ||
Feature | Value | Requested? |
Navigation system | 600 | Yes |
DVD-Audio-compatible player | 0 | No |
Traffic information | 25 | No |
Off-road navigation system | 0 | No |
Media drive | 15 | No |
USB port | 25 | No |
Total Requested | 600 | 90% |
Total Not Requested | 65 | 10% |