21 MPG combined isn’t going to win any green awards, nor will it convince anyone to buy a 2020 Nissan 370Z Roadster. But for those who crave the visceral experience of a naturally aspirated V6, rear-wheel drive, and open-top motoring, it’s a price they’re typically more than willing to pay. This car exists for a specific purpose and appeals to a driver who prioritizes engagement and exhilaration above all else. Fuel efficiency, while a consideration, certainly isn’t the main factor in their purchasing decision. They want the feel of the road, the roar of the engine, and the wind in their hair, and the 370Z Roadster delivers that.

City and highway performance

The EPA estimates the 2020 Nissan 370Z Roadster with the 3.7L V6 and automatic transmission at 18 MPG in the city and 25 MPG on the highway. The city figure reflects the stop-and-go nature of urban driving, where the Z’s strong engine is constantly fighting against its own weight. The highway number is more palatable, but it’s also tied to the reality that most Z owners aren’t cruising at a steady 65 MPH. The temptation to explore the upper reaches of the tachometer is simply too strong, and that invariably impacts fuel consumption. These figures represent a reasonable baseline for responsible driving, but let’s be honest, few Z owners are known for that.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Nissan 370Z Roadster at $2,750. This figure is calculated based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% driven on the highway, using the national average fuel price at the time of calculation. It’s important to remember that this is just an estimate. Your actual fuel costs may be higher or lower depending on your driving habits, the actual price of fuel in your area, and how aggressively you exploit the Z’s performance potential. Push the car hard and that annual figure will rise sharply.

Real-world expectations

While the EPA figures provide a useful benchmark, real-world MPG for the 2020 Nissan 370Z Roadster tends to vary. Drivers located in urban environments with lots of stop-and-go traffic will likely see numbers closer to the 18 MPG city estimate, or even slightly below. Conversely, drivers who primarily use the Z for weekend cruises on open highways may see numbers closer to or even slightly above the 25 MPG highway estimate. However, the biggest factor impacting real-world MPG is driving style. Those who frequently engage in spirited acceleration and aggressive driving will find their fuel economy significantly lower than the EPA estimates. Expect a final average somewhere near 21 MPG, but with the potential to go significantly higher or lower.

How it compares

Compared to other performance-oriented convertibles, the 370Z Roadster’s fuel economy is neither particularly impressive nor unusually bad. The BMW Z4 M40i, with its turbocharged inline-six, delivers a significantly better 25 MPG combined. At the other end of the spectrum, a V8-powered Ford Mustang GT Convertible hovers around 18 MPG combined. What does this comparison mean for the 370Z Roadster buyer? It reinforces the decision they’ve already made. If they are truly focused on lower fuel costs, the Z4’s blend of performance and economy is tempting. But for the Z faithful, those options don’t quite capture the raw, unfiltered character of the Z. For a broader perspective, consult 370Z MPG across all years.

Tips to maximize efficiency

The 2020 Nissan 370Z Roadster isn’t designed to be a fuel-sipping champion but there are still ways to improve upon the EPA estimates. Smooth, consistent acceleration minimizes fuel consumption compared to hard launches and aggressive throttle inputs. Treat the accelerator pedal with respect, especially in city driving, and you’ll see a noticeable difference.

Proper tire inflation is critical for optimal fuel economy. Check tire pressure regularly and maintain the recommended PSI as stated on the door placard. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. For optimal results, check pressures when the tires are cold.

Unnecessary weight in the vehicle also negatively impacts fuel economy. Remove any items from the trunk or passenger compartment that you don’t need. Every extra pound adds to the car’s overall burden, forcing the engine to work harder and burn more fuel. A minimalist approach will yield tangible efficiency gains.

Avoid idling for extended periods. If you anticipate being stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and reliably, making this a simple and effective way to conserve fuel. It’s a small change that adds up over time.

Consider using premium fuel, even though it isn’t strictly required. The 370Z’s high-compression engine is designed to perform optimally with higher octane gasoline. While regular fuel will suffice, premium fuel may result in slightly better performance and fuel economy, particularly under demanding driving conditions. Explore all Nissan fuel economy data before deciding.