Cadillac STS Cadillac STS 2009 Acura RLX Acura RLX 2015

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Cadillac STS vs. Acura RLX 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.

Cadillac STS vs. Acura RLX Invoice Comparison

Lowest Total Price: $61,370

Acura RLX   
Difference: $7,255

Lowest Total Invoice: $56,103

Acura RLX   
Difference: $6,858

Calculate Payments

  Down Payment Interest Rate Term
Model Year20092015
ModelSTSRLX
TrimV8Base
Body4dr Sedan4dr Sedan
Base Price $55,910 $48,450
Base Invoice $52,276 $44,324
Preferred Equipment Group 1SG 11,940  
Advance Package   12,000
Preferred Equipment Group 1SG 9,910  
Advance Package   10,859
Options (change) 11,940 12,000
Options (change) 9,910 10,859
Destination 775 920
Total Price $68,625 $61,370
Total Invoice $62,961 $56,103

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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

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Request free, no-obligation Cadillac STS dealer quotes or Acura RLX dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Cadillac STS vs. Acura RLX

Lowest Adjusted Price and Invoice: Acura RLX
TrueDelta Adjusted Price Difference: $9,795
TrueDelta Adjusted Invoice Difference: $9,180
Model Year20092015
ModelSTSRLX
TrimV8Base
Body4dr Sedan4dr Sedan
Engine320hp V8310hp V6
TransmissionT6T6
DrivetrainRWDFWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)300, 15500, 14
Tire (rear if not all the same)235/50-18245/40-19
Total Price$68,625$61,370
Adjustments for Features0-2,540
Feature-Adjusted Total Price$68,625$58,830
Total Invoice$62,961$56,103
Adjustments for Features0-2,322
Feature-Adjusted Total Invoice$62,961$53,781

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Features Comparison: Cadillac STS vs. Acura RLX

Model Year20092015
ModelSTSRLX
TrimV8Base
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100
RWD$0 
FWD $0
Accessories 
Active noise reduction $0
Adaptive cruise control$600 
Adaptive cruise control, all-speed $850
Remote app $25
Remote start$150 
Remote window/roof operation $15
Sunshade, rear, power $225
Sunshades, second row $125
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats $0
Automatic braking, high-speed or partial $200
Forward collision warning $200
Knee airbag, driver $75
Lane keeping assist $400
Obstacle detection, front $150
Radar- or camera-based collision preparation system $0
Rearview camera $200
Rollover sensor $50
Temporary spare tire$150 
Torque vectoring, brake-based $100
Cargo Management 
Cargo net$40 
Climate Control 
Automatic air recirculation$100 
Rear air vents with automatic controls $250
Rear air vents with manual controls$150 
Drivetrain 
Limited-slip rear differential$300 
Exterior 
Bright-finished exhaust tip(s)$25 
Laminated rear side windows $100
Rear spoiler$200 
Infotainment 
App support $0
Aux input $50
Bluetooth audio streaming $25
CD changer, in-dash$325 
CD player $125
DVD-Audio-compatible player $0
DVD-compatible player$0 
HD radio $50
Media drive $15
MP3-compatible player $50
Rear seat audio controls$25 
SMS text-to-speech reader $25
Telematics service, such as OnStar $200
Telematics service, such as OnStar, with navigation$225 
Traffic + travel information $25
USB port $25
Instruments, Lights, and Mirrors 
Auto-dimming headlights$200 
Auto-dimming passenger-side mirror $75
Fog lights$125 
Head-up display (HUD)$350 
Headlight washers$50 
Interior ambient lighting $150
LED headlights $1000
Mirror tilt-down in reverse $25
Power-folding mirrors $50
Spotter mirror(s) $50
Xenon HID headlights$500 
Seats and Interior Trim 
Leather door panel trim $250
Leather-wrapped steering wheel $150
Wood trim$300 
Wood/leather-wrapped steering wheel$150 
Suspension, Wheels, and Tires 
Adaptive dampers - electrical$500 
Adaptive dampers - mechanical $100
Alloy wheels $350
Performance steering system (optional)$0 
Polished alloy wheels$350 
Rear wheel steering $1500
Sport suspension (upgrade)$0 
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$5,915$8,455
Value of Feature Adjustments$0$2,540
Value of Feature Adjustments0-2,322

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Specifications Comparison: Cadillac STS vs. Acura RLX

Model Year20092015
ModelSTSRLX
Body4dr Sedan4dr Sedan
Wheelbase116.4 in112.2 in
Length196.7 in196.1 in
Width72.6 in74.4 in
Height57.6 in57.7 in
Curb Weight3,974 lb.3,934 lb.
Fuel Capacity17.0 gal.18.5 gal.
Row 1 Headroom38.7 in37.6 in
Row 1 Shoulder Room58.6 in59.6 in
Row 1 Hip Room54.6 in55.9 in
Row 1 Legroom42.6 in42.3 in
Row 2 Headroom37.9 in36.9 in
Row 2 Shoulder Room57.4 in57.0 in
Row 2 Hip Room55.6 in54.5 in
Row 2 Legroom38.3 in38.8 in
Cargo Volume13.8 ft315.3 ft3

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Option Package Details
Cadillac STS V8

Preferred Equipment Group 1SG
FeatureValueRequested?
Adaptive shocks - electrical500No
Cooled or ventilated front seats300Yes
Sunroof900Yes
Adaptive cruise control450Yes
235/50WR18 tires200No
255/45WR18 tires200No
Termporary spare tire150No
Xenon HID headlights500Yes
Headlight washers50No
Auto-dimming headlights200No
Head-up display (HUD)350No
Lane departure warning system200Yes
Blind spot warning system200Yes
Sport suspension (upgrade)250No
Performance braking system (optional)250No
Limited-slip rear differential300No
Rear spoiler200No
Additional engine cooling0No
Power steering cooler0No
Performance steering system (optional)250No
Navigation system600Yes
Surround sound250Yes
DVD-compatible player0No
Rear seat audio controls25No
Voice control for nav and audio100Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Total Requested350052%
Total Not Requested327548%

Option Package Details
Acura RLX

Advance Package
FeatureValueRequested?
Heated second row seats200Yes
Cooled or ventilated front seats300Yes
Obstacle detection, front150No
Obstacle detection, rear250Yes
Heated steering wheel100Yes
Auto-dimming driver-side mirror75Yes
Auto-dimming passenger-side mirror75No
Radar- or camera-based collision preparation system0No
Adaptive cruise control, all-speed700No
Automatic braking, high-speed200No
Lane keeping assist system400No
Sunshade, rear, power225No
Sunshades, second row125No
Krell, 500W, 14 speakers (with subwoofer)350No
Rain-sensing wipers100Yes
Laminated front side windows200Yes
Power-folding mirrors50No
Woodgrain trim (optional)0No
Blind spot warning system200Yes
Laminated rear side windows100No
Leather seating surfaces900Yes
245/40WR19 tires400No
Voice control for nav and audio75Yes
Traffic + travel information25No
Navigation system600Yes
Total Requested300052%
Total Not Requested280048%

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