2005 Cadillac STS 2WD
Fuel Economy Overview
The 2005 Cadillac STS 2WD achieves an EPA-estimated 18 MPG in combined city and highway driving, with 16 MPG in the city and 23 MPG on the highway. Powered by a 3.6L 6-cylinder engine paired with a automatic (s5), this midsize cars features Rear-Wheel Drive drive.
In terms of environmental impact, the 2005 STS 2WD produces approximately 494 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this STS 2WD has higher-than-average emissions in this regard.
The estimated annual fuel cost for this vehicle is $3,300, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $5,750 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.
Energy DNA
Green Scorecard
Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy
Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.
Aerodynamic Speed Penalty
EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Expect your real-world highway fuel economy to drop by roughly 15-20% at interstate speeds.
5-Year Total Cost of Ownership
Recall Intelligence
ON CERTAIN PASSENGER VEHICLES, THE REAR AXLE PINION SEAL DOES NOT MEET ALL OF THE SPECIFICATIONS AND MAY EXPERIENCE A FLUID LEAK.
Consequence & Remedy
Consequence: A REAR DIFFERENTIAL FAILURE MAY CAUSE LOSS OF MOTIVE POWER AND POSSIBLY LOSS OF CONTROL INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE PINION SEAL FREE OF CHARGE. THE RECALL BEGAN ON FEBRUARY 1, 2008. OWNERS MAY CONTACT CADILLAC AT 1-800-458-8006 OR HTTP://WWW.CADILLAC.COM; PONTIAC AT 1-800-620-7668 OR HTTP://WWW.PONTIAC.COM; AND SATURN AT 1-800-972-8876 OR HTTP://WWW.SATURN.COM.
CERTAIN VEHICLES HAVE A LEFT OR RIGHT REAR SUSPENSION TOE LINK THAT COULD SEPARATE BECAUSE OF AN INCORRECT WELD.
Consequence & Remedy
Consequence: IF THIS WERE TO OCCUR, THE AFFECTED REAR WHEEL WOULD BE ABLE TO TURN IN OR OUT, AFFECTING VEHICLE CONTROL, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL INSPECT THE RIGHT AND LEFT TOE LINK AND REPLACE AS REQUIRED. IF A TOE LINK IS REPLACED, THE DEALER WILL PERFORM A WHEEL ALIGNMENT. THE RECALL BEGAN ON MAY 3, 2006. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339.
CERTAIN VEHICLES EQUIPPED WITH V6 ENGINES MAY HAVE A CONDITION WHERE FUEL IS NO LONGER SUPPLIED TO THE ENGINE. THIS CONDITION OCCURS WITHOUT THE ILLUMINATION OF THE FUEL LEVEL LOW INDICATOR LIGHT OR THE WARNING CHIME.
Consequence & Remedy
Consequence: IF THE ENGINE STOPS RUNNING, THE OPERATOR WILL NOT BE ABLE TO RESTART THE VEHICLE WHICH COULD INCREASE THE RISK OF A CRASH.
Remedy: DEALERS WILL REPROGRAM THE ELECTRONIC CONTROL MODULE (ECM) WITH NEW SOFTWARE FREE OF CHARGE. OWNERS WERE NOTIFIED IN DECEMBER 2005 AND ASKED TO MAINTAIN AT LEAST 1/4 OF A TANK FUEL LEVEL TO AVOID THIS CONDITION UNTIL THE PARTS ARE AVAILABLE. THE PARTS ARE NOW AVAILABLE, OWNER RENOTIFICATION BEGAN ON MARCH 23, 2006. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339.
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Looking for comprehensive historical data?
NHTSA FARS (Fatal Crash History) and broader generational safety trends are aggregated at the model level rather than by specific engine configurations. View the complete historical data profile for all Cadillac STS 2WD configurations.
Similar 2005 Midsize Cars Alternatives
2005 Audi A8
4.2L 8-cyl 4-Wheel or All-Wheel Drive
2005 BMW 545i
4.4L 8-cyl Rear-Wheel Drive
2005 Cadillac CTS
3.6L 6-cyl Rear-Wheel Drive
2005 Cadillac STS 2WD
4.6L 8-cyl Rear-Wheel Drive
2005 Infiniti Q45
4.5L 8-cyl Rear-Wheel Drive
2005 Jaguar S-Type R
4.2L 8-cyl Rear-Wheel Drive
Fuel Cost Analysis
Based on 15,000 miles/year and current fuel prices.
Efficiency Breakdown
Estimated Lifetime Carbon Footprint
(Based on 200,000 miles driven)