The 2021 Audi TT RS, equipped with its charismatic 2.5L 5-cylinder engine, gets 24 MPG combined. It’s not trying to win any efficiency awards. The TT RS isn’t about sensible commuting; it’s about visceral thrills and driving engagement. Its buyers are willing to sacrifice some fuel economy for the distinctive engine note, the rapid acceleration, and the unique styling that sets it apart.

City and highway performance

The EPA estimates the TT RS achieves 20 MPG in the city and 30 MPG on the highway. The city figure reflects stop-and-go traffic where the engine’s eagerness is constantly being reined in, and the turbo spools and relaxes. The highway MPG shows the engine’s flexible nature in its highest gear.

At a steady cruise, it requires relatively little effort to maintain speed, and the seven-speed dual-clutch transmission helps keep the engine in its sweet spot.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Audi TT RS at $2,400. This figure is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. Premium fuel is required for the 2.5L 5-cylinder engine, so you won’t be able to save money by pumping regular. Changes in gasoline prices will also directly impact the amount you spend on fuel annually.

Real-world expectations

Driver behavior heavily influences real-world fuel economy. Aggressive acceleration and frequent use of the car’s power will almost certainly reduce MPG. A gentle driving style with anticipation of traffic flow and minimal hard braking can help you approach, or even occasionally exceed, the EPA estimates. The TT RS is a car meant to be enjoyed, and enjoying its performance will inherently lead to lower fuel economy. If you’re constantly using the throttle, expect numbers closer to the city estimate, regardless of where you drive.

How it compares

The TT RS inhabits a niche space. Alternatives in terms of performance and size exist, though not always with the unique character of the Audi’s five-cylinder. The Porsche 718 Cayman GT4 offers a naturally aspirated flat-six engine and even sharper handling, but its EPA combined MPG is 18. Another option is the BMW M2 Competition, which delivers similar performance and a more practical interior but achieves around 20 MPG combined. The Nissan Z, while newer, can also be cross shopped, and it posts 22 MPG combined. Each has a different mission, but the compromises are clear. The Audi makes the most of turbocharging technology and the unique five-cylinder engine layout, with the goal of providing plenty of power and an aural experience. Check out TT MPG across all years. See all Audi fuel economy data.

Tips to maximize efficiency

Avoid excessive idling. The TT RS, like any turbocharged car, consumes fuel even when stationary with the engine running. Minimize idling time, especially during warm-up, as the engine management system typically runs a richer air-fuel mixture when cold, impacting fuel consumption. Only idle the car when needed, such as to run the AC on a hot humid day.

Monitor tire pressure regularly. Underinflated tires increase rolling resistance, forcing the engine to work harder and burn more fuel. Check your tire pressures at least once a month and inflate them to the recommended levels found on the door jamb sticker. Properly inflated tires also improve handling and extend tire life.

Use the Audi Drive Select system intelligently. The TT RS offers various driving modes that adjust engine mapping, throttle response, and transmission behavior. Selecting modes like “Comfort” or “Efficiency” will prioritize fuel economy by dampening throttle response and shifting to higher gears earlier. It may slightly reduce the car’s responsiveness, but it can make a tangible difference in fuel consumption during regular commuting.

Anticipate traffic flow. Smooth driving minimizes the need for sudden acceleration and braking, both of which consume excess fuel. By anticipating traffic conditions and maintaining a consistent speed, you can reduce the amount of energy wasted. Look further ahead, and try to coast with the flow of traffic, avoiding unnecessary stops and starts.