2008 Cadillac STS
Fuel Economy Overview
The 2008 Cadillac STS achieves an EPA-estimated 20 MPG in combined city and highway driving, with 17 MPG in the city and 26 MPG on the highway. Powered by a 3.6L 6-cylinder engine paired with a automatic (s6), this midsize cars features Rear-Wheel Drive drive.
In terms of environmental impact, the 2008 STS produces approximately 444 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 has higher-than-average emissions in this regard.
The estimated annual fuel cost for this vehicle is $3,000, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $4,250 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
GM IS RECALLING 4,586 MY 2008 CADILLAC STS AND STS-V PASSENGER VEHICLES FOR FAILING TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 138, 'TIRE PRESSURE MONITORING SYSTEMS' (TPMS). THE STANDARD REQUIRES AN INDICATION TO THE DRIVER FOR CERTAIN TPMS MALFUNCTIONS. WHEN THE SYSTEM DETECTS A MALFUNCTION, THE LOW TIRE WARNING LIGHT SHOULD FLASH FOR ABOUT ONE MINUTE AND THEN STAY ON THE REMAINDER OF THE IGNITION CYCLE. A DRIVER INFORMATION CENTER MESSAGE WILL ALSO BE DISPLAYED ON THE INSTRUMENT PANEL.
Consequence & Remedy
Consequence: THESE INDICATIONS OF A SYSTEM MALFUNCTION DO NOT WORK. PREMATURE TIRE FAILURE COULD RESULT IN A LOSS OF CONTROL OF THE VEHICLE, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPROGRAM THE REMOTE CONTROL DOOR LOCK RECEIVER MODULE FREE OF CHARGE. THE RECALL BEGAN ON MARCH 18, 2008. OWNERS MAY CONTACT CADILLAC AT 1-800-982-2339 OR THROUGH THEIR WEBSITE AT <A HREF=HTTP://WWW.GMOWNERCENTER.COM>HTTP://WWW.GMOWNERCENTER.COM</A> .
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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 configurations.
Similar 2008 Midsize Cars Alternatives
2008 Acura TL
3.5L 6-cyl Front-Wheel Drive
2008 Audi A6 quattro
3.1L 6-cyl 4-Wheel or All-Wheel Drive
2008 BMW 528xi
3L 6-cyl 4-Wheel or All-Wheel Drive
2008 BMW 528xi
3L 6-cyl 4-Wheel or All-Wheel Drive
2008 BMW 535i
3L 6-cyl Rear-Wheel Drive
2008 BMW 535i
3L 6-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)