27 MPG combined won’t win any hypermiling contests, but it’s a respectable figure for the 2023 Cadillac CT5 with the 2.0L turbocharged four-cylinder. This isn’t a Prius competitor; it’s a stylish, comfortable, and genuinely engaging sport sedan for buyers who value a premium driving experience without completely sacrificing fuel efficiency. The CT5 2.0T offers a good mix of performance and economy, making it a smart choice for those who still appreciate a traditional sedan.

City and highway performance

The EPA estimates for the CT5’s 2.0L turbo engine show its balanced nature. Its city MPG is rated at 23, which reflects stop-and-go conditions in urban driving. The turbocharged engine provides ample low-end torque, minimizing the need to rev the engine hard during acceleration. Out on the open road, the CT5 shines with a highway MPG of 33. This efficiency is aided by the smooth-shifting 10-speed automatic transmission, which allows the engine to cruise at lower RPMs for maximum fuel conservation. With this level of fuel economy, highway road trips are a breeze.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2023 Cadillac CT5 2.0L is $2,150. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, local fuel prices, and the specific type of fuel you use. This figure provides a useful baseline for comparing the CT5’s running costs to those of other vehicles in its class. To learn more, explore CT5 MPG across all years.

Real-world expectations

EPA estimates provide a good starting point, but real-world fuel economy can change depending on driving styles and conditions. Aggressive acceleration, frequent hard braking, and prolonged idling can negatively impact fuel efficiency. Driving in heavy traffic or hilly terrain can also reduce MPG. However, drivers who adopt a smooth and consistent driving style and prioritize highway cruising can often achieve figures that meet or even exceed the EPA estimates.

How it compares

In the compact luxury sedan segment, the CT5’s fuel economy stacks up well against competitors. The BMW 330i, for example, is rated at 25 MPG combined so the CT5 has the slightest edge. The Mercedes-Benz C300 achieves a similar 25 MPG combined. The Lexus IS 300, known for its reliability, lags slightly behind at 24 MPG combined with its base engine, however the IS is known for having more sporty attributes. This difference in MPG might not be a deal-breaker for everyone, but it highlights the CT5’s position for buyers looking to balance luxury, performance, and efficiency. It’s worth exploring all Cadillac fuel economy data to better understand the brand’s range.

Tips to maximize efficiency

Use the CT5’s selectable drive modes. The “Tour” mode optimizes the engine and transmission settings for maximum fuel efficiency during everyday driving. This mode typically softens throttle response and encourages earlier upshifts, helping to conserve fuel.

Ensure that your tires are properly inflated. Underinflated tires increase rolling resistance, which puts extra strain on the engine and reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the placard inside the driver’s side door jamb.

Avoid unnecessary idling; if you’re stopped for more than a minute, it’s generally more fuel-efficient to turn off the engine. Modern engines are designed to restart quickly and reliably, so you won’t experience any significant wear and tear by turning the engine off briefly.

Use cruise control on the highway since maintaining a consistent speed helps to minimize unnecessary acceleration and braking, which can significantly improve fuel efficiency. Cruise control also helps you maintain a safe and legal speed, minimizing the risk of speeding tickets.

Consider using premium fuel if you notice any engine knocking or pinging. The CT5 2.0T is designed to run on regular unleaded fuel, but some drivers may experience better performance and fuel economy with premium fuel, particularly in hot weather or when towing.