| Model Year | 2015 | 2015 | 2015 | 2006 | 2006 | 2006 | 2006 |
| Model | A8 / S8 | A8 / S8 | A8 / S8 | Mustang | Mustang | Mustang | Mustang |
| Trim | A8 3.0T | A8 4.0T | S8 | V6 Deluxe | V6 Premium | GT Deluxe | GT Premium |
| Body | 4dr Sedan | 4dr Sedan | 4dr Sedan | 2dr Coupe | 2dr Coupe | 2dr Coupe | 2dr Coupe |
| | | | | | | |
| Transmission and Drivetrain | |
| 8-speed manually-shiftable automatic | $1300 | $1300 | $1300 | | | | |
| 5-speed manual | | | | $0 | $0 | $0 | $0 |
| AWD | $1700 | $1700 | $1700 | | | | |
| RWD | | | | $0 | $0 | $0 | $0 |
| Accessories | |
| Active noise reduction | | $0 | $0 | | | | |
| Hands-free trunk or liftgate | $100 | $100 | $100 | | | | |
| Power door closers | $300 | $300 | $300 | | | | |
| Power rear side windows | $200 | $200 | $200 | | | | |
| Power trunk closer | $350 | $350 | $350 | | | | |
| Proximity key | $250 | $250 | $250 | | | | |
| Remote window/roof operation | $15 | $15 | $15 | | | | |
| Sunshade, rear, power | $225 | $225 | $225 | | | | |
| Sunshades, second row, power | | | $225 | | | | |
| Tilt steering wheel, manual | | | | $150 | $150 | $150 | $150 |
| Tilt/telescoping steering wheel, power | $350 | $350 | $350 | | | | |
| Universal garage door opener | $100 | $100 | $100 | | | | |
| Brakes, Airbags, and Other Safety | |
| Active or whiplash-reducing head restraints, front seats | $0 | $0 | $0 | | | | |
| Around view cameras | | | $500 | | | | |
| Blind spot warning system | | | $200 | | | | |
| Brake assist | $50 | $50 | $50 | | | | |
| Brake- or yaw-sensor-initiated collision preparation system | $0 | $0 | $0 | | | | |
| Collision preparation system, rear | | | $100 | | | | |
| Knee airbag, driver | $75 | $75 | $75 | | | | |
| Knee airbag, passenger | $75 | $75 | $75 | | | | |
| Obstacle detection, front | $150 | $150 | $150 | | | | |
| Obstacle detection, rear | $250 | $250 | $250 | | | | |
| Rear side airbags | $300 | $300 | $300 | | | | |
| Rearview camera | $200 | $200 | | | | | |
| Rollover sensor | $50 | $50 | $50 | | | | |
| Side curtain airbags | $350 | $350 | $350 | | | | |
| Stability control | $400 | $400 | $400 | | | | |
| Tire-pressure monitor | $75 | $75 | $75 | | | | |
| Wide-view front camera | | | $150 | | | | |
| Wide-view rear camera | | | $0 | | | | |
| Cargo Management | |
| Air-conditioned storage compartment | $50 | $50 | $50 | | | | |
| Cargo net | $40 | $40 | $40 | | | | |
| Climate Control | |
| Automatic climate control, front | $200 | $200 | $200 | | | | |
| Dual-zone climate control | $125 | $125 | $125 | | | | |
| Heated windshield washer nozzles | $15 | $15 | $15 | | | | |
| Interior air filter | $0 | $0 | $0 | | | | |
| Rain-sensing wipers | $175 | $175 | $175 | | | | |
| Rear air vents | $100 | $100 | | | | | |
| Rear air vents with automatic controls | | | $250 | | | | |
| Rear dual-zone climate control | | | $125 | | | | |
| Residual heat | $50 | $50 | $50 | | | | |
| Variable intermittent wipers | | | | $75 | $75 | $75 | $75 |
| Drivetrain | |
| Limited-slip rear differential | | | | | | $300 | $300 |
| Engine / Motor | |
| Automatic start / stop | | $150 | | | | | |
| Dual-mode exhaust, switchable | | | $500 | | | | |
| Exterior | |
| Body kit | | | $0 | | | | |
| Bright-finished exhaust tip(s) | $25 | $25 | $25 | | | $25 | $25 |
| Laminated front side windows | | | $200 | | | | |
| Laminated rear side windows | | | $100 | | | | |
| Rear spoiler | | | | | | $200 | $200 |
| Sunroof | $900 | $900 | $900 | | | | |
| Infotainment | |
| Audio controls on steering wheel | $125 | $125 | $125 | | | | |
| Aux input | $50 | $50 | $50 | | | | |
| Bluetooth audio streaming | $25 | $25 | $25 | | | | |
| Bluetooth cell phone link | $100 | $100 | $100 | | | | |
| CD changer, in-dash | | | | | $325 | | $325 |
| CD player | $125 | $125 | $125 | $125 | | $125 | |
| DVD-compatible player | $0 | $0 | $0 | | | | |
| Handwriting recognition | $200 | $200 | $200 | | | | |
| HD radio | $50 | $50 | $50 | | | | |
| Media drive | $15 | $15 | $15 | | | | |
| MP3-compatible player | $50 | $50 | $50 | | $50 | | $50 |
| Navigation system | $600 | $600 | $600 | | | | |
| Satellite radio | $200 | $200 | $200 | | | | |
| Surround sound | $250 | $250 | $250 | | | | |
| Traffic + travel information | $25 | $25 | $25 | | | | |
| Voice control for nav and audio | $100 | $100 | $100 | | | | |
| Instruments, Lights, and Mirrors | |
| Analog clock | $25 | $25 | $25 | | | | |
| Auto-dimming driver-side mirror | $75 | $75 | $75 | | | | |
| Auto-dimming headlights | | | $200 | | | | |
| Auto-dimming passenger-side mirror | $75 | $75 | $75 | | | | |
| Auto-dimming rearview mirror | $150 | $150 | $150 | | | | |
| Automatic headlights | $125 | $125 | $125 | | | | |
| Compass | $0 | $0 | $0 | | | | |
| Cornering lights | $50 | $50 | $50 | | | | |
| Fog light, rear | $100 | $100 | $100 | | | | |
| Fog lights | | | | | | $125 | $125 |
| Head-up display (HUD) | | | $350 | | | | |
| Headlight washers | $50 | $50 | $50 | | | | |
| Heated mirrors | $25 | $25 | $25 | | | | |
| Illuminated visor mirror, driver | $50 | $50 | $50 | | | | |
| Illuminated visor mirror, passenger | $50 | $50 | $50 | | | | |
| Interior ambient lighting, configurable | $150 | $150 | $150 | | | | |
| LED headlights | $1000 | $1000 | $1000 | | | | |
| Mirror tilt-down in reverse | $25 | $25 | $25 | | | | |
| Outside temperature display | $50 | $50 | $50 | | | | |
| Power-folding mirrors | $50 | $50 | $50 | | | | |
| Steering-linked headlights | $150 | $150 | $150 | | | | |
| Turn signals on or near mirrors | $25 | $25 | $25 | | | | |
| Visor mirror, driver | | | | $10 | $10 | $10 | $10 |
| Visor mirror, passenger | | | | $10 | $10 | $10 | $10 |
| Seats and Interior Trim | |
| Aluminum trim | | | | $100 | $100 | $100 | $100 |
| Center armrest(s), second row | $50 | $50 | $50 | | | | |
| Cooled or ventilated front seats | | | $300 | | | | |
| Folding second row seats | | | | $300 | $300 | $300 | $300 |
| Heated front seats | $200 | $200 | $200 | | | | |
| Massage, driver seat | | | $100 | | | | |
| Massage, passenger seat | | | $100 | | | | |
| Memory system, driver seat | $200 | $200 | $200 | | | | |
| Memory system, passenger seat | $150 | $150 | $150 | | | | |
| Power 4-way lumbar adjuster, driver seat | $150 | $150 | $150 | | | | |
| Power 4-way lumbar adjuster, passenger seat | $150 | $150 | $150 | | | | |
| Power fore-aft adjuster, passenger seat | $100 | $100 | $100 | | | | |
| Power headrest height adjuster, driver seat | $50 | $50 | $50 | | | | |
| Power headrest height adjuster, passenger seat | $50 | $50 | $50 | | | | |
| Power height adjuster, passenger seat | $100 | $100 | $100 | | | | |
| Power lumbar adjuster, driver seat | | | | $100 | $100 | $100 | $100 |
| Power recliner, driver seat | $100 | $100 | $100 | | | | |
| Power recliner, passenger seat | $100 | $100 | $100 | | | | |
| Power seat belt height adjusters, front row | $25 | $25 | $25 | | | | |
| Power seatback bolsters, driver seat | | | $100 | | | | |
| Power seatback bolsters, passenger seat | | | $100 | | | | |
| Power thigh bolsters, driver seat | | | $100 | | | | |
| Power thigh bolsters, passenger seat | | | $100 | | | | |
| Power thigh support length adjuster, driver seat | $100 | $100 | $100 | | | | |
| Power thigh support length adjuster, passenger seat | $100 | $100 | $100 | | | | |
| Power tilt adjuster, passenger seat | $100 | $100 | $100 | | | | |
| Power upper seatback recliner, driver seat | $100 | $100 | $100 | | | | |
| Power upper seatback recliner, passenger seat | $100 | $100 | $100 | | | | |
| Upholstered instrument panel | $300 | $300 | $300 | | | | |
| Wood trim | $300 | $300 | $300 | | | | |
| Suspension, Wheels, and Tires | |
| Active steering | | | $1000 | | | | |
| Adaptive dampers - electrical | $500 | $500 | $500 | | | | |
| Air suspension, auto-leveling and height adjustable | $1000 | $1000 | $1000 | | | | |
| Alloy wheels | $350 | $350 | $350 | | | $350 | $350 |
| Electronic systems calibration selector | $200 | $200 | $200 | | | | |
| Machined alloy wheels | | | | $350 | $350 | | |
| Sport suspension (upgrade) | | | | | | $0 | $0 |
| Transmission | |
| Steering-wheel-mounted transmission controls | $100 | $100 | $100 | | | | |
| Total Value of Features | $17,360 | $17,510 | $21,860 | $1,220 | $1,470 | $1,870 | $2,120 |
| Value of Feature Adjustments | $16,140 | $16,290 | $20,640 | $0 | $250 | $650 | $900 |
| Value of Feature Adjustments | -15,024 | -15,162 | -19,207 | 0 | -230 | -598 | -828 |