| Model Year | 2018 | 2018 |
| Model | A8 / S8 | Mustang |
| Trim | S8 Plus | Shelby GT350R |
| Body | 4dr Sedan | 2dr Coupe |
| | |
| Transmission and Drivetrain | |
| 8-speed manually-shiftable automatic | $1300 | |
| 6-speed manual | | $150 |
| AWD | $1700 | |
| RWD | | $0 |
| Accessories | |
| Active noise reduction | $0 | |
| Adaptive cruise control, all-speed | $850 | |
| Cruise control | | $150 |
| Hands-free trunk or liftgate | $100 | |
| Heated steering wheel | $100 | |
| Power door closers | $300 | |
| Power rear side windows | $200 | |
| Power trunk closer | $350 | |
| Remote window/roof operation | $15 | |
| Sunshade, rear, power | $225 | |
| Sunshades, second row, power | $225 | |
| Tilt/telescoping steering wheel, manual | | $250 |
| Tilt/telescoping steering wheel, power | $350 | |
| Brakes, Airbags, and Other Safety | |
| 911 assist | | $25 |
| Active glove box | | $100 |
| Active or whiplash-reducing head restraints, front seats | $0 | |
| Around view cameras | $500 | |
| Automatic braking, low-speed | $200 | |
| Blind spot warning system | $200 | |
| Ceramic brake rotors | $4000 | |
| Ceramic front brake rotors | | $2500 |
| Collision preparation system, rear | $100 | |
| Forward collision warning | $200 | |
| Full-size spare tire | $225 | |
| High performance brake pads (optional) | | $0 |
| Knee airbag, passenger | $75 | |
| Lane departure prevention, steering-based | $200 | |
| Lane departure warning | $200 | |
| Line lock | | $50 |
| Obstacle detection, front | $150 | |
| Obstacle detection, rear | $250 | |
| Radar- or camera-based collision preparation system | $0 | |
| Rear side airbags | $300 | |
| Rearview camera | | $200 |
| Rollover sensor | $50 | |
| Safety key | | $5 |
| Vehicle health reports | | $0 |
| Wide-view front camera | $150 | |
| Wide-view rear camera | $0 | |
| Cargo Management | |
| Air-conditioned storage compartment | $50 | |
| Cargo net | $40 | |
| Rear seat pass-through | $100 | |
| Ski sack | $50 | |
| Climate Control | |
| Automatic air recirculation | $100 | |
| Heated windshield washer nozzles | $15 | |
| Rain-sensing wipers | $175 | |
| Rear air vents with automatic controls | $250 | |
| Rear dual-zone climate control | $125 | |
| Residual heat | $50 | |
| Variable intermittent wipers | | $75 |
| Drivetrain | |
| Differential cooler | | $0 |
| Torque-sensing limited-slip rear differential | | $300 |
| Engine / Motor | |
| Raised top speed limiter | $0 | |
| Exterior | |
| Black exterior trim (optional) | $0 | |
| Black grille (optional) | $0 | |
| Body kit | $0 | |
| Body kit (gray/black) | | $0 |
| Bright-finished exhaust tip(s) | | $25 |
| Carbon fiber exterior trim (other) | $100 | |
| Carbon fiber mirror housings | $100 | |
| Carbon fiber rear spoiler | $300 | |
| Carbon fiber wing-type rear spoiler | | $400 |
| Front splitter spoiler | | $200 |
| Laminated front side windows | $200 | |
| Laminated rear side windows | $100 | |
| Sunroof | $900 | |
| Infotainment | |
| Android Auto support | | $100 |
| App support | | $0 |
| Apple CarPlay support | | $100 |
| Aux input | $50 | |
| DVD-compatible player | $0 | |
| Handwriting recognition | $200 | |
| HD radio | $50 | |
| In-vehicle Internet | $150 | |
| Media drive | $15 | |
| SD Card slot | $25 | |
| SMS text-to-speech reader | | $25 |
| Surround sound | $250 | |
| Voice control for external devices | | $0 |
| Wi-Fi hotspot | $50 | |
| Instruments, Lights, and Mirrors | |
| Analog clock | $25 | |
| Auto-dimming driver-side mirror | $75 | |
| Auto-dimming headlights | $200 | |
| Auto-dimming passenger-side mirror | $75 | |
| Cornering lights | $50 | |
| Fog light, rear | $100 | |
| Head-up display (HUD) | $350 | |
| Headlight washers | $50 | |
| Heated mirrors | $25 | |
| Interior ambient lighting, configurable | $150 | |
| LED headlights | $1000 | |
| Mirror tilt-down in reverse | $25 | |
| Performance meter | | $150 |
| Power-folding mirrors | $50 | |
| Spotter mirror(s) | | $50 |
| Steering-linked headlights | $150 | |
| Xenon HID headlights | | $500 |
| Seats and Interior Trim | |
| Aluminum trim | | $100 |
| Carbon fiber trim | $200 | |
| Center armrest(s), second row | $50 | |
| Cooled or ventilated front seats | $300 | |
| Heated front seats | $200 | |
| Heated second row seats | $200 | |
| Leather door panel trim | $250 | |
| Leather seating surfaces | $900 | |
| Leather-wrapped steering wheel | $150 | |
| Manual height adjuster, driver seat | | $50 |
| Massage, driver seat | $100 | |
| Massage, passenger seat | $100 | |
| Memory system, driver seat | $200 | |
| Memory system, passenger seat | $150 | |
| Metal pedals | | $75 |
| Power 4-way lumbar adjuster, driver seat | $150 | |
| Power 4-way lumbar adjuster, passenger seat | $150 | |
| Power fore-aft adjuster, driver seat | $100 | |
| Power fore-aft adjuster, passenger seat | $100 | |
| Power headrest height adjuster, driver seat | $50 | |
| Power headrest height adjuster, passenger seat | $50 | |
| Power height adjuster, driver seat | $100 | |
| Power height adjuster, passenger seat | $100 | |
| Power recliner, driver seat | $100 | |
| Power recliner, passenger seat | $100 | |
| Power seat belt height adjusters, front row | $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 | |
| Power thigh support length adjuster, passenger seat | $100 | |
| Power tilt adjuster, driver seat | $100 | |
| Power tilt adjuster, passenger seat | $100 | |
| Power upper seatback recliner, driver seat | $100 | |
| Power upper seatback recliner, passenger seat | $100 | |
| Synthetic suede door panel trim | | $250 |
| Synthetic suede headliner | $650 | |
| Synthetic suede inserts in seating surfaces | | $450 |
| Synthetic suede steering wheel | | $150 |
| Upholstered instrument panel | $300 | |
| Suspension, Wheels, and Tires | |
| Active steering | $1000 | |
| Additional powertrain and chassis calibration options | | $0 |
| Air suspension, auto-leveling and height adjustable | $1000 | |
| Alloy wheels | $350 | |
| Carbon fiber wheels | | $5000 |
| Performance steering system (optional) | | $0 |
| Ultra-sport suspension (upgrade) | | $0 |
| Wheels, dark finish | | $0 |
| Transmission | |
| Launch control | | $100 |
| Steering-wheel-mounted transmission controls | $100 | |
| Total Value of Features | $26,510 | $11,530 |
| Value of Feature Adjustments | $14,980 | $0 |
| Value of Feature Adjustments | -13,939 | 0 |