19 MPG combined. That’s what you can expect from the 2019 Cadillac CTS equipped with the 3.6L V6. Owners of this car aren’t prioritizing Prius-like fuel savings; they’re looking for a mix of luxury, performance, and American heritage. They understand that the CTS delivers a driving experience that some competitors can’t match, and they’re prepared to accept the fuel bill that comes with it.

City and highway performance

The EPA estimates the 2019 Cadillac CTS 3.6L V6 gets 16 MPG in the city and 24 MPG on the highway. The lower city figure reflects stop-and-go traffic, where the engine spends more time idling and accelerating from a standstill. The higher highway number shows the engine’s ability to cruise efficiently at consistent speeds. The eight-speed automatic transmission plays a significant role in this by keeping the engine in its optimal RPM range at various speeds. If most of your driving is done in urban environments, expect fuel consumption to be noticeably higher than the combined figure.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Cadillac CTS 3.6L V6 at $3,050. This figure is calculated based on driving 15,000 miles per year, with an assumed fuel price based on national averages. This is just an estimate. If you drive more than 15,000 miles annually, or if fuel prices in your area are significantly higher, your actual fuel costs will be greater. Those who drive fewer miles or live in areas with lower gas prices will likely spend less.

Real-world expectations

While the EPA provides standardized estimates, real-world fuel economy often varies. Factors such as driving style, road conditions, and even tire pressure can influence how many miles you get per gallon. Drivers prone to aggressive acceleration and braking will see their fuel economy dip below the EPA estimates, whereas those who adopt a smoother, more conservative driving style may achieve figures closer to the highway rating. The 3.6L V6 in the CTS is a responsive engine that encourages spirited driving, so resisting the urge to fully exploit its power can be a challenge, and a factor in your fuel consumption.

How it compares

In the luxury sedan segment, fuel economy varies considerably. The BMW 540i xDrive, a direct competitor to the CTS, gets around 25 MPG combined with its turbocharged inline-6 engine. Meanwhile, the Lexus GS 350, another rival, achieves approximately 23 MPG combined from its V6. The Audi A6 3.0T also scores 24 MPG combined. The CTS offers character and driving feel. Cadillac buyers are often drawn to the CTS for its distinctive design and sporty handling, traits not always prioritized by those choosing its competitors. Examining all Cadillac fuel economy data can help put the CTS into sharper perspective.

Tips to maximize efficiency

One key practice is maintaining consistent tire pressure. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly, and ensure it matches the recommended levels specified on the sticker inside the driver’s side doorjamb. The correct tire pressure will not only improve fuel economy but also enhance handling and prolong tire life. This simple step ensures the car behaves as intended and burns fuel efficiently.

Avoid excessive idling. If you anticipate being stopped for more than a minute or two, consider turning off the engine. Modern vehicles, including the CTS, are designed to restart quickly and efficiently. Prolonged idling consumes fuel unnecessarily, especially in city driving. Short stops where the engine continues to run contribute significantly to lower MPG in congested areas. By adopting this small change, you are making a significant impact on your fuel consumption.

Use cruise control on the highway whenever possible. Maintaining a constant speed minimizes unnecessary acceleration and deceleration, which helps improve fuel economy. The CTS’s eight-speed automatic transmission is programmed to select the most efficient gear for cruising, further enhancing fuel economy on long motorway drives. However, be sure to deactivate cruise control when you encounter hilly terrain, as the system may downshift aggressively, negating the fuel-saving benefits.

Schedule regular maintenance. A well-maintained engine operates more efficiently. Ensure that you adhere to the manufacturer’s recommended maintenance schedule, including oil changes, air filter replacements, and spark plug maintenance. Keep an eye on the condition of your engine air filter and ensure that it is clean, as this can directly impact the airflow and impact combustion efficiency. Ignoring routine maintenance can lead to decreased fuel economy and potentially more serious mechanical problems. You can also examine CTS MPG across all years to understand the impact of various model updates.