Cadillac STS Cadillac STS 2009 Mazda MX-5 Miata Mazda MX-5 Miata 2018

We are 103,000+ car owners sharing real-world car information.

Join Us

Cadillac STS vs. Mazda MX-5 Miata 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. Mazda MX-5 Miata Invoice Comparison

Lowest Total Price: $34,175

Mazda MX-5 Miata RF Grand Touring   
Difference: $24,350

Lowest Total Invoice: $32,279

Mazda MX-5 Miata RF Grand Touring   
Difference: $21,301

Calculate Payments

  Down Payment Interest Rate Term
Model Year2009200920092018
ModelSTSSTSSTSMX-5 Miata
TrimV6V8STS-VRF Grand Touring
Body4dr Sedan4dr Sedan4dr Sedan2dr Coupe
Base Price $46,410 $55,910 $80,160 $32,750
Base Invoice $43,393 $52,276 $73,448 $30,964
Premium Luxury Collection 2,740      
Preferred Equipment Group 1SC 8,600      
Preferred Equipment Group 1SG   11,940    
Sunroof     1,200  
Rear spoiler       350
Cargo net       50
Door sill trim plates       150
Premium Luxury Collection 2,274      
Preferred Equipment Group 1SC 7,138      
Preferred Equipment Group 1SG   9,910    
Sunroof     996  
Rear spoiler       280
Cargo net       40
Door sill trim plates       120
Options (change) 11,340 11,940 1,200 550
Options (change) 9,412 9,910 996 440
Destination 775 775 775 875
Gas Tax 0 0 2,100 0
Total Price $58,525 $68,625 $84,235 $34,175
Total Invoice $53,580 $62,961 $77,319 $32,279

Return to top

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 Cadillac STS dealer quotes or Mazda MX-5 Miata 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: Cadillac STS vs. Mazda MX-5 Miata

Lowest Adjusted Price and Invoice: Mazda MX-5 Miata RF Grand Touring
TrueDelta Adjusted Price Difference: $19,520
TrueDelta Adjusted Invoice Difference: $16,879
Model Year2009200920092018
ModelSTSSTSSTSMX-5 Miata
TrimV6V8STS-VRF Grand Touring
Body4dr Sedan4dr Sedan4dr Sedan2dr Coupe
Engine302hp V6320hp V8469hp V8155hp I4
TransmissionT6T6T6M6
DrivetrainRWDRWDRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)300, 15300, 15300, 15?, 9
Tire (rear if not all the same)235/50-18235/50-18255/45-18205/45-17
Total Price$58,525$68,625$84,235$34,175
Adjustments for Features-4,830-5,580-5,7950
Feature-Adjusted Total Price$53,695$63,045$78,440$34,175
Cost Above Minimum$0$9,350$24,745$0
Total Invoice$53,580$62,961$77,319$32,279
Adjustments for Features-4,422-5,119-5,3190
Feature-Adjusted Total Invoice$49,158$57,842$72,000$32,279
Cost Above Minimum$0$8,684$22,842$0

Return to top

Features Comparison: Cadillac STS vs. Mazda MX-5 Miata

Model Year2009200920092018
ModelSTSSTSSTSMX-5 Miata
TrimV6V8STS-VRF Grand Touring
Body4dr Sedan4dr Sedan4dr Sedan2dr Coupe
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100$1100 
6-speed manual   $150
RWD$0$0$0$0
Accessories 
Adaptive cruise control $600  
Cruise control$150 $150$150
Heated steering wheel$100$100$100 
Power rear side windows$200$200$200 
Power retractable rear window   $350
Remote start$150$150$150 
Tilt steering wheel, manual   $150
Tilt/telescoping steering wheel, power$350$350$350 
Wind blocker, small   $100
Brakes, Airbags, and Other Safety 
911 assist   $25
Active or whiplash-reducing head restraints, front seats   $0
Cross-traffic warning, rear   $100
Obstacle detection, rear$250$250$250 
Roll bar   $200
Side curtain airbags$350$350$350 
Temporary spare tire$150$150  
Tires, run-flat  $150 
Cargo Management 
Rear seat pass-through$100$100$100 
Climate Control 
Automatic air recirculation$100$100$100 
Dual-zone climate control$125$125$125 
Heated windshield washer nozzles  $15 
Interior air filter$0$0$0 
Rear air vents with manual controls$150$150$150 
Drivetrain 
Limited-slip rear differential$300$300$300 
Exterior 
Laminated front side windows$200$200$200 
Power retractable roof section   $2000
Sunroof$900$900$900 
Infotainment 
App support   $0
Aux input   $50
Bluetooth audio streaming   $25
CD changer, in-dash$325$325$325 
CD player, remote   $100
DVD-compatible player$0$0$0 
HD radio   $50
MP3-compatible player   $50
Rear seat audio controls$25$25$25 
SMS text-to-speech reader   $25
Surround sound$250$250$250 
Telematics service, such as OnStar, with navigation$225$225$225 
Traffic information   $25
USB port   $25
Instruments, Lights, and Mirrors 
Compass   $0
Fog lights$125$125$125 
Head-up display (HUD)$350$350$350 
Headlight washers$50$50$50 
Illuminated visor mirror, driver$50$50$50 
Illuminated visor mirror, passenger$50$50$50 
LED headlights, single projector or low beam only   $750
Steering-linked headlights   $150
Turn signals on or near mirrors$25$25$25 
Visor mirror, driver   $10
Visor mirror, passenger   $10
Xenon HID headlights$500$500$500 
Seats and Interior Trim 
Center armrest(s), front row$75$75$75 
Center armrest(s), second row$50$50$50 
Cooled or ventilated front seats$300$300  
Heated second row seats$200$200$200 
Leather door panel trim  $250 
Leather-wrapped steering wheel  $150$150
Manual tilt adjuster, driver seat   $50
Memory system, driver seat$200$200$200 
No leather in second row   $-300
Power 4-way lumbar adjuster, driver seat$150$150$150 
Power 4-way lumbar adjuster, passenger seat$150$150$150 
Power fore-aft adjuster, driver seat$100$100$100 
Power fore-aft adjuster, passenger seat$100$100$100 
Power height adjuster, driver seat$100$100$100 
Power height adjuster, passenger seat$100$100$100 
Power recliner, driver seat$100$100$100 
Power recliner, passenger seat$100$100$100 
Power tilt adjuster, driver seat$100$100$100 
Power tilt adjuster, passenger seat$100$100$100 
Synthetic suede inserts in leather seating surfaces  $0 
Upholstered instrument panel, leather  $1000 
Wood trim$300$300$300 
Wood/leather-wrapped steering wheel$150$150  
Suspension, Wheels, and Tires 
Adaptive dampers - electrical $500  
Alloy wheels  $350$350
Auto-leveling rear shocks$200 $200 
Performance steering system (optional)$0$0$0 
Polished alloy wheels$350$350  
Sport suspension (upgrade)$0$0$0 
Total Value of Features$9,575$10,325$10,540$4,745
Value of Feature Adjustments$4,830$5,580$5,795$0
Value of Feature Adjustments-4,422-5,119-5,3190

Return to top

Specifications Comparison: Cadillac STS vs. Mazda MX-5 Miata

Model Year20092018
ModelSTSMX-5 Miata
Body4dr Sedan2dr Coupe
Wheelbase116.4 in90.9 in
Length196.7 in154.1 in
Width72.6 in68.3 in
Height57.6 in49.0 in
Curb Weight3,974 lb.2,446 lb.
Fuel Capacity17.0 gal.11.9 gal.
Row 1 Headroom38.7 in36.8 in
Row 1 Shoulder Room58.6 in52.2 in
Row 1 Hip Room54.6 in52.0 in
Row 1 Legroom42.6 in43.1 in
Row 2 Headroom37.9 in0.0 in
Row 2 Shoulder Room57.4 in0.0 in
Row 2 Hip Room55.6 in0.0 in
Row 2 Legroom38.3 in0.0 in
Cargo Volume13.8 ft34.5 ft3

Return to top

Option Package Details
Cadillac STS V6

Premium Luxury Collection
FeatureValueRequested?
Sunroof900Yes
Termporary spare tire150No
Head-up display (HUD)350No
Lane departure warning system200Yes
Blind spot warning system200Yes
Total Requested130072%
Total Not Requested50028%
Preferred Equipment Group 1SC
FeatureValueRequested?
Xenon HID headlights500Yes
Auto-leveling rear shocks200No
Headlight washers50No
235/50WR18 tires200No
Auto-dimming headlights200Yes
255/45WR18 tires200No
Navigation system600Yes
Surround sound250No
DVD-compatible player0No
Rear seat audio controls25No
Voice control for nav and audio100Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Cooled or ventilated front seats300No
Wood/leather-wrapped steering wheel0No
Sport suspension (upgrade)250No
Performance braking system (optional)250No
Limited-slip rear differential300No
Rear spoiler200Yes
Additional engine cooling0No
Power steering cooler0No
Performance steering system (optional)250No
Wood trim300No
Heated front seats200Yes
Heated second row seats200No
CD changer, in-dash200No
Power 4-way lumbar adjuster, driver seat150No
Power 4-way lumbar adjuster, passenger seat150No
Universal garage door opener100Yes
Rain-sensing wipers100Yes
Memory system, driver seat200No
Heated steering wheel100No
Cargo net40Yes
Total Requested204034%
Total Not Requested392566%

Option Package Details
Cadillac STS V8

Preferred Equipment Group 1SG
FeatureValueRequested?
Adaptive shocks - electrical500No
Cooled or ventilated front seats300No
Sunroof900Yes
Adaptive cruise control450No
235/50WR18 tires200No
255/45WR18 tires200No
Termporary spare tire150No
Xenon HID headlights500Yes
Headlight washers50No
Auto-dimming headlights200Yes
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 spoiler200Yes
Additional engine cooling0No
Power steering cooler0No
Performance steering system (optional)250No
Navigation system600Yes
Surround sound250No
DVD-compatible player0No
Rear seat audio controls25No
Voice control for nav and audio100Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Total Requested290043%
Total Not Requested387557%

Was this information useful?

We're glad we could help! Share this page:

We're so sorry! Tell us how we can improve it.

See TrueDelta's information for all Sedans
See TrueDelta's information for all Cadillac models.