

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: $29,125 Pontiac Grand Prix | |||||
Difference: $22,315 | |||||
Lowest Total Invoice: $26,855 Pontiac Grand Prix | |||||
Difference: $21,056 | |||||
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Model Year | 2018 | 2018 | 2018 | 2008 | 2008 |
Model | A6 / S6 / RS6 | A6 / S6 / RS6 | A6 / S6 / RS6 | Grand Prix | Grand Prix |
Trim | A6 2.0T | A6 3.0T | S6 4.0 TFSI | Base | GXP |
Body | 4dr Sedan | 4dr Sedan | 4dr Sedan | 4dr Sedan | 4dr Sedan |
Base Price | $49,700 | $58,700 | $71,900 | $22,210 | $29,325 |
Base Invoice | $46,222 | $54,592 | $66,868 | $20,988 | $27,712 |
Metallic paint (extra cost) | 575 | 575 | 575 | ||
Cargo mat | 190 | 190 | 190 | 50 | 50 |
Security Package | 995 | ||||
Premium Package | 940 | ||||
Folding passenger seat | 75 | ||||
Preferred Package | 890 | ||||
Navigation system | 1,845 | 2,145 | |||
Satellite radio | 200 | 200 | |||
Floor mats | 80 | 80 | |||
Sun and Sound Package | 1,090 | ||||
Sunroof | 895 | ||||
Side curtain airbags | 395 | ||||
Metallic paint (extra cost) | 536 | 536 | 536 | ||
Cargo mat | 178 | 178 | 178 | 42 | 42 |
Security Package | 826 | ||||
Premium Package | 780 | ||||
Folding passenger seat | 62 | ||||
Preferred Package | 739 | ||||
Navigation system | 1,531 | 1,780 | |||
Satellite radio | 166 | 166 | |||
Floor mats | 66 | 66 | |||
Sun and Sound Package | 905 | ||||
Sunroof | 743 | ||||
Side curtain airbags | 328 | ||||
Options (change) | 765 | 765 | 765 | 6,165 | 3,765 |
Options (change) | 714 | 714 | 714 | 5,117 | 3,125 |
Destination | 975 | 975 | 975 | 750 | 750 |
Total Price | $51,440 | $60,440 | $73,640 | $29,125 | $33,840 |
Total Invoice | $47,911 | $56,281 | $68,557 | $26,855 | $31,587 |
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Lowest Adjusted Price and Invoice: Pontiac Grand Prix | |||||
TrueDelta Adjusted Price Difference: $16,110 | |||||
TrueDelta Adjusted Invoice Difference: $15,277 | |||||
Model Year | 2018 | 2018 | 2018 | 2008 | 2008 |
Model | A6 / S6 / RS6 | A6 / S6 / RS6 | A6 / S6 / RS6 | Grand Prix | Grand Prix |
Trim | A6 2.0T | A6 3.0T | S6 4.0 TFSI | Base | GXP |
Body | 4dr Sedan | 4dr Sedan | 4dr Sedan | 4dr Sedan | 4dr Sedan |
Engine | 252hp I4 | 340hp V6 | 450hp V8 | 200hp V6 | 303hp V8 |
Transmission | S7 | T8 | S7 | A4 | T4 |
Drivetrain | FWD | AWD | AWD | FWD | FWD |
EPA Fuel Economy (city/highway) | / MPG | / MPG | / MPG | / MPG | / MPG |
Audio (watts, speakers) | ?, 10 | 630, 14 | 630, 14 | 245, 9 | 245, 9 |
Tire (rear if not all the same) | 245/45-18 | 245/45-18 | 255/35-20 | 225/60-16 | 255/45-18 |
Total Price | $51,440 | $60,440 | $73,640 | $29,125 | $33,840 |
Adjustments for Features | -6,205 | -9,580 | -11,455 | 0 | -225 |
Feature-Adjusted Total Price | $45,235 | $50,860 | $62,185 | $29,125 | $33,615 |
Cost Above Minimum | $0 | $5,625 | $16,950 | $0 | $4,490 |
Total Invoice | $47,911 | $56,281 | $68,557 | $26,855 | $31,587 |
Adjustments for Features | -5,779 | -8,921 | -10,664 | 0 | -210 |
Feature-Adjusted Total Invoice | $42,132 | $47,360 | $57,893 | $26,855 | $31,377 |
Cost Above Minimum | $0 | $5,228 | $15,761 | $0 | $4,522 |
Model Year | 2018 | 2018 | 2018 | 2008 | 2008 |
Model | A6 / S6 / RS6 | A6 / S6 / RS6 | A6 / S6 / RS6 | Grand Prix | Grand Prix |
Trim | A6 2.0T | A6 3.0T | S6 4.0 TFSI | Base | GXP |
Body | 4dr Sedan | 4dr Sedan | 4dr Sedan | 4dr Sedan | 4dr Sedan |
Transmission and Drivetrain | |||||
7-speed automated manual | $1200 | $1200 | |||
8-speed manually-shiftable automatic | $1300 | ||||
4-speed automatic | $800 | ||||
4-speed manually-shiftable automatic | $900 | ||||
FWD | $0 | $0 | $0 | ||
AWD | $1700 | $1700 | |||
Accessories | |||||
Proximity key | $250 | $250 | $250 | ||
Remote keyless entry | $225 | $225 | $225 | ||
Remote keyless entry, extended range | $225 | $225 | |||
Remote start | $150 | $150 | |||
Tilt steering wheel, manual | $150 | $150 | |||
Tilt/telescoping steering wheel, manual | $250 | ||||
Tilt/telescoping steering wheel, power | $350 | $350 | |||
Universal garage door opener | $100 | $100 | $100 | ||
Brakes, Airbags, and Other Safety | |||||
Blind spot warning system | $200 | $200 | |||
Brake assist | $50 | $50 | $50 | ||
Collision preparation system, rear | $100 | $100 | |||
Front side airbags | $350 | $350 | $350 | ||
Knee airbag, driver | $75 | $75 | $75 | ||
Knee airbag, passenger | $75 | $75 | $75 | ||
Obstacle detection, front | $150 | $150 | $150 | ||
Obstacle detection, rear | $250 | $250 | $250 | ||
Rearview camera | $200 | $200 | $200 | ||
Rollover sensor | $50 | $50 | $50 | ||
Secondary collision brake assist | $25 | $25 | $25 | ||
Stability control | $400 | $400 | $400 | $400 | |
Cargo Management | |||||
Overhead sunglass holder | $25 | ||||
Rear seat pass-through | $100 | $100 | $100 | ||
Climate Control | |||||
Automatic air recirculation | $100 | $100 | $100 | ||
Heated windshield washer nozzles | $15 | $15 | $15 | ||
Rain-sensing wipers | $175 | $175 | $175 | ||
Rear air vents with automatic controls | $250 | $250 | $250 | ||
Rear dual-zone climate control | $125 | $125 | |||
Residual heat | $50 | $50 | $50 | ||
Variable intermittent wipers | $75 | $75 | |||
Engine / Motor | |||||
Automatic start / stop | $150 | $150 | $150 | ||
Dual-mode exhaust, switchable | $500 | ||||
Regenerative braking | $0 | $0 | $0 | ||
Exterior | |||||
Bodyside moldings | $75 | $75 | |||
Bright-finished exhaust tip(s) | $25 | $25 | $25 | $25 | |
Laminated front side windows | $200 | $200 | $200 | ||
Rear spoiler | $200 | $200 | |||
Infotainment | |||||
4G LTE connectivity | $0 | $0 | $0 | ||
Android Auto support | $100 | $100 | $100 | ||
Apple CarPlay support | $100 | $100 | $100 | ||
Aux input | $50 | $50 | $50 | ||
Bluetooth audio streaming | $25 | $25 | $25 | ||
Bluetooth cell phone link | $100 | $100 | $100 | ||
DVD-compatible player | $0 | $0 | $0 | ||
Handwriting recognition | $200 | $200 | $200 | ||
HD radio | $50 | $50 | $50 | ||
In-vehicle Internet | $150 | $150 | $150 | ||
Media drive | $15 | $15 | $15 | ||
MP3-compatible player | $50 | $50 | $50 | ||
SD Card slot | $25 | $25 | $25 | ||
Surround sound | $250 | $250 | |||
Telematics service, such as OnStar | $200 | $200 | |||
Traffic + travel information | $25 | $25 | $25 | ||
USB port | $25 | $25 | $25 | ||
Voice control for nav and audio | $100 | $100 | $100 | ||
Wi-Fi hotspot | $50 | $50 | $50 | ||
Instruments, Lights, and Mirrors | |||||
Auto-dimming driver-side mirror | $75 | $75 | |||
Auto-dimming passenger-side mirror | $75 | $75 | |||
Auto-dimming rearview mirror | $150 | $150 | $150 | ||
Fog light, rear | $100 | $100 | $100 | ||
Fog lights | $125 | ||||
Head-up display (HUD) | $350 | ||||
Heated mirrors | $25 | $25 | $25 | ||
Interior ambient lighting | $150 | $150 | $150 | ||
LED headlights | $1000 | $1000 | |||
Mirror tilt-down in reverse | $25 | $25 | $25 | ||
Power-folding mirrors | $50 | $50 | |||
Turn signals on or near mirrors | $25 | $25 | $25 | ||
Xenon HID headlights | $500 | ||||
Seats and Interior Trim | |||||
Center armrest(s), second row | $50 | $50 | $50 | ||
Door sill trim plates | $100 | $100 | |||
Folding passenger seat | $150 | $150 | |||
Illuminated door sill trim plates | $200 | $200 | |||
Leather door panel trim | $250 | ||||
Leather seating surfaces | $900 | $900 | $900 | $900 | |
Memory system, driver seat | $200 | $200 | $200 | ||
Metal pedals | $75 | ||||
Power 4-way lumbar adjuster, driver seat | $150 | $150 | $150 | $150 | |
Power 4-way lumbar adjuster, passenger seat | $150 | ||||
Power fore-aft adjuster, passenger seat | $100 | $100 | $100 | ||
Power height adjuster, passenger seat | $100 | $100 | $100 | ||
Power lumbar adjuster, driver seat | $100 | ||||
Power recliner, driver seat | $100 | $100 | $100 | ||
Power recliner, passenger seat | $100 | $100 | $100 | ||
Power tilt adjuster, passenger seat | $100 | $100 | $100 | ||
Synthetic suede inserts in leather seating surfaces | $0 | ||||
Wood trim | $300 | $300 | $300 | ||
Suspension, Wheels, and Tires | |||||
Air suspension, auto-leveling and height adjustable | $1000 | ||||
Alloy wheels | $350 | $350 | $350 | $350 | |
Electronic systems calibration selector | $200 | $200 | $200 | ||
Performance steering system (optional) | $0 | ||||
Polished alloy wheels | $350 | ||||
Sport suspension (upgrade) | $0 | $0 | |||
Transmission | |||||
Steering-wheel-mounted transmission controls | $100 | $100 | $100 | ||
Total Value of Features | $9,605 | $12,980 | $14,855 | $3,400 | $3,625 |
Value of Feature Adjustments | $6,205 | $9,580 | $11,455 | $0 | $225 |
Value of Feature Adjustments | -5,779 | -8,921 | -10,664 | 0 | -210 |
Model Year | 2018 | 2008 |
Model | A6 / S6 / RS6 | Grand Prix |
Body | 4dr Sedan | 4dr Sedan |
Wheelbase | 114.6 in | 110.5 in |
Length | 194.2 in | 198.3 in |
Width | 73.8 in | 71.6 in |
Height | 57.8 in | 55.9 in |
Curb Weight | 3,804 lb. | 3,478 lb. |
Fuel Capacity | 19.8 gal. | 17.0 gal. |
Row 1 Headroom | 37.2 in | 38.8 in |
Row 1 Shoulder Room | 57.5 in | 58.0 in |
Row 1 Hip Room | 0.0 in | 54.5 in |
Row 1 Legroom | 41.3 in | 42.2 in |
Row 2 Headroom | 37.8 in | 36.2 in |
Row 2 Shoulder Room | 56.3 in | 54.8 in |
Row 2 Hip Room | 0.0 in | 54.3 in |
Row 2 Legroom | 37.4 in | 36.2 in |
Cargo Volume | 14.1 ft3 | 16.0 ft3 |
Navigation system | ||
Feature | Value | Requested? |
Navigation system | 600 | Yes |
Monsoon, 245W, 9 speakers (with subwoofer) | 350 | No |
Total Requested | 600 | 63% |
Total Not Requested | 350 | 37% |
Security Package | ||
Feature | Value | Requested? |
Antilock brakes (ABS) | 400 | Yes |
Traction control | 100 | Yes |
Side curtain airbags | 350 | Yes |
Total Requested | 850 | 100% |
Total Not Requested | 0 | 0% |
Premium Package | ||
Feature | Value | Requested? |
Leather seating surfaces | 900 | Yes |
Automatic climate control, front | 200 | Yes |
Heated front seats | 200 | Yes |
Dual-zone climate control | 125 | Yes |
Total Requested | 1425 | 100% |
Total Not Requested | 0 | 0% |
Preferred Package | ||
Feature | Value | Requested? |
Audio controls on steering wheel | 125 | Yes |
Illuminated visor mirror, driver | 40 | Yes |
Illuminated visor mirror, passenger | 40 | Yes |
Power lumbar adjuster, driver seat | 100 | Yes |
Trip computer | 150 | Yes |
Leather-wrapped steering wheel | 150 | Yes |
Outside temperature display | 50 | Yes |
Compass | 0 | Yes |
Map lights | 25 | No |
Cargo net | 40 | Yes |
Overhead sunglass holder | 25 | No |
Remote start | 150 | No |
Remote keyless entry, extended range | 0 | No |
Total Requested | 695 | 78% |
Total Not Requested | 200 | 22% |
Sun and Sound Package | ||
Feature | Value | Requested? |
Sunroof | 900 | Yes |
CD changer, in-dash | 200 | No |
Monsoon, 245W, 9 speakers (with subwoofer) | 350 | No |
Total Requested | 900 | 62% |
Total Not Requested | 550 | 38% |