Audi A4 / S4 Audi A4 / S4 2021 Acura RDX Acura RDX 2009
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Audi A4 / S4 vs. Acura RDX 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.

Audi A4 / S4 vs. Acura RDX Invoice Comparison

Lowest Total Price: $37,955

Acura RDX   
Difference: $18,665

Calculate Payments

  Down Payment Interest Rate Term
Model Year20212009
ModelA4 / S4RDX
TrimS4Base
Body4dr Sedan4dr SUV
Base Price $49,900 $33,895
S Sport Package 2,500  
Navigation and Telematics Package 2,600  
Metallic paint (extra cost) 575  
Technology Package   3,300
S Sport Package 2,326  
Navigation and Telematics Package 2,418  
Metallic paint (extra cost) 536  
Technology Package   3,026
Options (change) 5,675 3,300
Options (change) 5,280 3,026
Destination 1,045 760
Total Price $56,620 $37,955

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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 Audi A4 / S4 dealer quotes or Acura RDX 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: Audi A4 / S4 vs. Acura RDX

Lowest Adjusted Price: Acura RDX
Lowest Adjusted Invoice: Audi A4 / S4 S4
TrueDelta Adjusted Price Difference: $12,535
TrueDelta Adjusted Invoice Difference: $29,310
Model Year20212009
ModelA4 / S4RDX
TrimS4Base
Body4dr Sedan4dr SUV
Engine349hp V6240hp I4
TransmissionT8T5
DrivetrainAWDAWD
EPA Fuel Economy (city/highway)20/28 MPG17/22 MPG
Audio (watts, speakers)755, 19410, 10
Tire (rear if not all the same)245/40-18235/55-18
Total Price$56,620$37,955
Adjustments for Features-6,1300
Feature-Adjusted Total Price$50,490$37,955

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Features Comparison: Audi A4 / S4 vs. Acura RDX

Model Year20212009
ModelA4 / S4RDX
TrimS4Base
Body4dr Sedan4dr SUV
Transmission and Drivetrain 
8-speed manually-shiftable automatic$1300 
5-speed manually-shiftable automatic $1000
AWD$1700$1700
Accessories 
Proximity key$250 
Remote app$25 
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats $0
Automatic braking, high-speed or partial$200 
Automatic braking, low-speed$200 
Blind spot warning system$200 
Collision preparation system, rear$100 
Cross-traffic warning, rear$100 
Driver drowsiness monitor$150 
Forward collision warning$200 
Knee airbag, driver$75 
Knee airbag, passenger$75 
Obstacle detection, front$150 
Obstacle detection, rear$250 
Pedestrian detection$50 
Radar- or camera-based collision preparation system$0 
Secondary collision brake assist$25 
Torque vectoring, brake-based$100 
Vehicle exit assist$25 
Cargo Management 
Air-conditioned storage compartment$50 
Cargo cover $75
Climate Control 
Automatic air recirculation$100 
Heated windshield washer nozzles$15 
Rain-sensing wipers$175 
Rear air vents with automatic controls$250 
Rear wiper $175
Variable intermittent wipers $75
Engine / Motor 
Automatic start / stop$150 
Regenerative braking$0 
Exterior 
Body kit$0 
Bodyside cladding $350
Deep-tinted rear windows $275
Painted brake calipers (optional)$0 
Infotainment 
4G LTE connectivity$0 
Android Auto support$100 
Apple CarPlay support$100 
Bluetooth audio streaming$25 
CD changer, in-dash $325
CD player, remote$100 
DVD-Audio-compatible player $0
DVD-compatible player$0 
Handwriting recognition$200 
HD radio$50 
In-vehicle Internet$150 
Media drive$15 
SD Card slot$25 
Telematics service, such as OnStar$200 
Traffic + travel information$25 
Traffic information $25
USB port$25 
Wi-Fi hotspot$50 
Instruments, Lights, and Mirrors 
Auto-dimming driver-side mirror$75 
Auto-dimming passenger-side mirror$75 
Auto-dimming rearview mirror$150 
Automatic headlights$125 
Automatic-off headlights $25
Compass$0 
Fog light, rear$100 
Large color reconfigurable instrument cluster display$250 
LED headlights$1000 
Mirror tilt-down in reverse $25
Power-folding mirrors$50 
Xenon HID headlights $500
Seats and Interior Trim 
Aluminum trim$100 
Door sill trim plates $100
Illuminated door sill trim plates$200 
Leather door panel trim $250
Manual thigh support length adjuster, driver seat$50 
Manual thigh support length adjuster, passenger seat$50 
Massage, driver seat$100 
Massage, passenger seat$100 
Metal pedals$75 
Power 4-way lumbar adjuster, driver seat$150 
Power 4-way lumbar adjuster, passenger seat$150 
Power height adjuster, passenger seat$100 
Power lumbar adjuster, driver seat $100
Power tilt adjuster, passenger seat$100 
Synthetic suede door panel trim$250 
Synthetic suede inserts in leather seating surfaces$0 
Suspension, Wheels, and Tires 
Adaptive dampers - electrical$500 
Electronic systems calibration selector$200 
Sport suspension (upgrade)$0 
Transmission 
Launch control$100 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$11,130$5,000
Value of Feature Adjustments$6,130$0
Value of Feature Adjustments-6850

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See a complete comparison of Audi A4 / S4 vs. Acura RDX features.

Specifications Comparison: Audi A4 / S4 vs. Acura RDX

Model Year20212009
ModelA4 / S4RDX
Body4dr Sedan4dr SUV
Wheelbase111.0 in104.3 in
Length187.5 in180.7 in
Width72.7 in73.6 in
Height56.2 in65.2 in
Curb Weight3,847 lb.3,968 lb.
Fuel Capacity15.3 gal.18.0 gal.
Row 1 Headroom37.3 in38.7 in
Row 1 Shoulder Room55.9 in58.2 in
Row 1 Hip Room0.0 in54.4 in
Row 1 Legroom41.3 in41.8 in
Row 2 Headroom37.4 in38.3 in
Row 2 Shoulder Room54.5 in56.3 in
Row 2 Hip Room0.0 in53.0 in
Row 2 Legroom35.7 in37.6 in
Cargo Volume,
Minimum		12.0 ft327.8 ft3
Cargo Volume,
Maximum		12.060.6 ft3

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See a complete comparison of Audi A4 / S4 vs. Acura RDX specs.

Option Package Details
Audi A4 / S4 S4

S Sport Package
FeatureValueRequested?
Adaptive dampers - electrical500No
Active rear differential500Yes
Painted brake calipers (optional)0No
Total Requested50050%
Total Not Requested50050%
Navigation and Telematics Package
FeatureValueRequested?
Large color reconfigurable instrument cluster display250No
Handwriting recognition200No
Remote app25No
Speed limit information0No
4G LTE connectivity0No
DVD-compatible player0No
Voice control for nav and audio75Yes
Media drive15No
Traffic + travel information25No
In-vehicle Internet150No
Wi-Fi hotspot50No
Navigation system600Yes
Total Requested67549%
Total Not Requested71551%

Option Package Details
Acura RDX

Technology Package
FeatureValueRequested?
Navigation system600Yes
DVD-Audio-compatible player0Yes
Rearview camera200Yes
Surround sound250Yes
Voice control for nav and audio100Yes
Traffic information25Yes
ELS, 410W, 10 speakers (with subwoofer)350No
Total Requested117577%
Total Not Requested35023%

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