17 MPG combined. That’s the reality for anyone considering a 2015 Audi R8 Spyder with the 4.2L V8. It’s a figure that might induce palpitations in a Prius owner, but for the target demographic of this open-top supercar, it’s likely a secondary consideration, if it registers at all. This car is about visceral thrills, the intoxicating shriek of a naturally aspirated V8 inches from your ears, and the sheer drama of its design.

City and highway performance

The EPA estimates peg the R8 Spyder at 14 MPG in the city and 23 MPG on the highway. Predictably, stop-and-go traffic is the enemy, where the relatively high-revving V8 constantly pulls the car from a standstill. The thirsty engine can’t use its efficient high-gear cruising abilities in a city environment. However, on the open road, the 23 MPG rating is respectable and achievable if the driver exercises restraint. That’s easier said than done when presented with an open stretch of asphalt urging you to chase the redline.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2015 Audi R8 Spyder 4.2L is $3,400. This figure is calculated based on driving 15,000 miles per year, using a blend of city and highway driving habits (55% city, 45% highway), and using prevailing national average fuel prices. Of course, this number is highly variable.

Someone who primarily drives their R8 Spyder on weekends for pleasure cruises will likely spend significantly less, while someone who uses it as a (very impractical) daily commuter might exceed that $3,400 figure.

Real-world expectations

The official EPA numbers provide a baseline, but real-world fuel economy often deviates based on driving style and conditions. R8 Spyder owners, particularly those who relish the performance aspects of the car, can expect fuel economy to skew lower than the EPA estimates. The temptation to hear the engine sing, to feel the surge of acceleration, is ever-present. Aggressive acceleration, frequent high-speed runs, and track days can quickly obliterate any hopes of achieving the advertised MPG.

Someone meticulously tracking and optimizing their MPGs probably isn’t the right buyer for this exotic convertible. Explore R8 MPG across all years to see trends.

How it compares

Compared to its rivals, the R8 Spyder’s fuel economy is in the ballpark, albeit on the less frugal end. A 2015 Porsche 911 Carrera S Cabriolet, for example, with its 3.8L flat-six, achieves an EPA-rated 22 MPG combined with the PDK transmission. A Ferrari California T, boasting a turbocharged 3.9L V8, is rated at 18 MPG combined.

The Lamborghini Huracan Spyder, with its naturally aspirated 5.2L V10, lands at a dismal 14 MPG combined. The fact that the R8 lands where it does is not surprising, it’s a conscious trade-off between efficiency and auditory pleasure. Many buyers are willing to make this sacrifice for the unique sound and feel of the car.

Tips to maximize efficiency

While maximizing fuel economy might not be the primary concern for an R8 Spyder owner, there are still steps that can be taken to eke out a few extra miles per gallon. Smooth and consistent acceleration is key. Avoid abrupt throttle inputs that force the engine to consume excess fuel. Treat the pedal with respect, and let the engine build power gradually.

Proper tire inflation plays an important role in fuel efficiency. Ensure that the tires are inflated to the recommended pressure, as indicated on the tire placard. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel.

Regular maintenance of filters and fluids also contributes to optimal performance. A clogged air filter or old engine oil can negatively impact fuel economy.

If conditions allow, use the higher gears of the seven-speed S tronic transmission. Cruising at lower RPMs reduces fuel consumption. Resist the urge to downshift unnecessarily, and let the engine use its torque to maintain speed. Regular servicing ensures peak efficiency by keeping everything running smoothly.

Finally, consider the route taken. Avoid congested areas where stop-and-go traffic is prevalent. Opt for routes with smoother traffic flow and consistent speeds. While it might not be the most direct route, it can lead to improved fuel economy, and let’s face it, any excuse to drive the car is a good one. Explore all Audi fuel economy data to see how other models perform.