21 MPG combined won’t win any fuel economy awards, but for the 2019 Cadillac CTS AWD with the 3.6L V6, it’s an acceptable compromise for the performance and all-weather capability it delivers. This CTS isn’t targeting buyers looking for less gas; instead, it attracts those who prioritize a comfortable, stylish, and capable luxury sedan with American character. Fuel efficiency, while considered, is less important than the driving experience and prestige.

City and highway performance

The EPA estimates for the 2019 Cadillac CTS AWD with the 3.6L V6 are 18 MPG in the city and 26 MPG on the highway. The city figure reflects the engine’s need to work harder in stop-and-go traffic, a common scenario for many CTS owners who use the car for commuting. The highway MPG, however, demonstrates that the CTS can achieve reasonable efficiency during longer trips, thanks to its eight-speed automatic transmission which allows the engine to cruise at lower RPMs. While not class-leading numbers, they are adequate for a naturally aspirated V6 in a relatively weighty all-wheel-drive sedan. Head over to see CTS MPG across all years.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Cadillac CTS AWD 3.6L at $2,100. This figure is calculated based on driving 15,000 miles per year, using a national average fuel price. Your actual fuel costs may vary significantly based on your driving habits, the type of fuel you use (premium is recommended for optimal performance), and fluctuations in fuel prices. Aggressive driving and consistent city driving will invariably lead to a higher annual cost, while a more conservative driving style and predominantly highway miles can bring it down.

Real-world expectations

While the EPA provides a standardized testing methodology, real-world fuel economy often differs. Owners of the 2019 Cadillac CTS AWD 3.6L will likely find that achieving the EPA’s 21 MPG combined rating requires conscious effort and a light foot. More aggressive driving, particularly in urban environments, can easily drop the average MPG into the mid-teens. Conversely, steady highway cruising at legal speeds may allow drivers to surpass the 26 MPG highway estimate. Ultimately, individual driving habits play an important role in determining fuel consumption.

How it compares

The 2019 Cadillac CTS AWD 3.6L’s fuel economy places it in a specific segment of the luxury sedan market. Consider the BMW 530i xDrive, which boasts a 27 MPG combined rating, a result of its turbocharged four-cylinder engine. Or the Mercedes-Benz E300 4MATIC, achieving 25 MPG combined, also with a four-cylinder turbo. Fuel economy is a key differentiator here. Even within Cadillac’s own lineup, considering the trade-offs is important. Check all Cadillac fuel economy data. These alternative powertrains achieve much better MPGs than the naturally aspirated V6 in the CTS. These comparisons matter to the CTS buyer who is evaluating the balance between performance feel and fuel costs.

Tips to maximize efficiency

Take advantage of the CTS’s Driver Selectable Modes. Selecting “Tour” mode will optimize the car’s settings for fuel efficiency, softening throttle response and prioritizing early upshifts. This can be particularly effective during highway driving and less spirited commutes.

Regular maintenance is critical for optimal fuel economy. Ensure that your CTS’s engine is properly tuned, that the tires are correctly inflated to the recommended pressure, and that the air filter is clean. These small steps can significantly affect fuel consumption over time.

Avoid aggressive acceleration and hard braking. The CTS’s 3.6L V6 is responsive, but exploiting its power frequently will hurt fuel economy. Anticipate traffic flow and maintain a steady speed whenever possible.

Minimize idling time. Excessive idling consumes fuel without covering any distance. If you anticipate being stationary for more than a minute or two, it’s generally more efficient to turn off the engine.

Consider minimizing the use of accessories like air conditioning, especially during short trips. The A/C compressor places an extra load on the engine, which can reduce fuel economy. Using the climate control sparingly or using the “eco” mode (if equipped) can help mitigate this effect.