Most drivers of the 2018 Cadillac CTS AWD with the 3.6L V6 might simply shrug at 22 MPG combined. This isn’t because it’s shockingly bad, but rather because the CTS AWD 3.6L isn’t purchased primarily for its fuel efficiency. It’s selected for its blend of luxury, performance, and all-weather capability. Buyers in snowy climates or those who value the added security of all-wheel drive are willing to trade a few MPGs for peace of mind and fun driving, and a peek at all Cadillac fuel economy data will reveal that performance often comes before economy. These buyers seek a stylish and comfortable sedan that doesn’t sacrifice driving dynamics, and the CTS, even in its AWD configuration, delivers on that promise.

City and highway performance

The CTS AWD 3.6L gets an EPA-estimated 19 MPG in the city and 27 MPG on the highway. These figures reflect the vehicle’s character. The city MPG hints at the engine’s ability to provide immediate power for quick acceleration and maneuvering in urban environments. The highway MPG is more respectable, showcasing the ability of the eight-speed automatic transmission to optimize fuel consumption at cruising speeds. Real-world highway MPG can easily match or even slightly exceed the EPA estimate, depending on driving style and conditions.

This is especially true if the car is driven with a light foot and at consistent speeds, using cruise control.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Cadillac CTS AWD 3.6L at $2,000. This figure is based on driving 15,000 miles per year and using national average fuel prices. Individual fuel costs will vary depending on local gas prices and driving habits. Drivers who primarily commute in stop-and-go traffic will likely see a higher annual fuel cost, while those who drive primarily on the highway may spend less. Many owners should consider this EPA number a baseline, a rough estimate that helps contextualize the long-term cost of owning the vehicle.

Comparing this figure against those of competing vehicles, or comparing CTS MPG across all years can help buyers understand the costs of owning such a car.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world fuel economy will vary. Drivers who frequently use the CTS’s ample power for quick acceleration or spirited driving can expect fuel economy to fall below the EPA estimates. Conversely, those who prioritize fuel efficiency by driving conservatively and avoiding aggressive acceleration may see numbers closer to or even slightly above the EPA figures. Many factors can impact these numbers, including tire pressure, vehicle maintenance, and even the type of gasoline used. In general, expect to see a combined MPG figure somewhere in the low 20s in mixed driving.

How it compares

Compared to its competitors, the 2018 Cadillac CTS AWD 3.6L is a mixed bag. BMW’s 530i xDrive, with its 2.0-liter turbo-four, achieves around 27 MPG combined, a clear advantage. The Mercedes-Benz E300 4MATIC also betters the CTS, posting 25 MPG combined using a similar turbocharged four-cylinder. However, those models lack the strong punch of the CTS’s naturally aspirated V6. Audi’s A6 with Quattro all-wheel drive lags behind the Caddy, offering 25 MPG combined. These numbers matter because the CTS buyer might also be cross-shopping these vehicles.

The Cadillac’s appeal lies in its specific blend of American luxury, aggressive styling, and a powerful V6 engine. The slight MPG penalty is considered acceptable by this buyer if performance and the driving experience are prioritized.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking, especially in city driving. The 3.6L V6 rewards a smooth and steady driving style with improved fuel economy. Anticipate traffic flow and try to maintain a consistent speed whenever possible. Using cruise control on the highway also helps economy considerably.

Regular maintenance is critical for optimal fuel efficiency. Ensure that the tires are properly inflated, and keep up with scheduled oil changes. A well-maintained engine runs more efficiently, and proper tire inflation reduces rolling resistance, saving you money at the pump.

Minimize idling, especially during cold weather. Even though it is tempting to heat up the engine during winter, excessive idling consumes fuel without getting anywhere. Instead, start driving gently after a brief warm-up period; the engine will reach its optimal operating temperature more quickly while you’re moving.

Remove unnecessary weight from the vehicle. Carrying extra cargo in the trunk or backseat adds to the vehicle’s overall weight, increasing fuel consumption. Consider clearing out any items that are not essential for daily driving.