The 2015 Nissan Altima 2.5 S gets 31 MPG combined, which is central to the car’s appeal for buyers looking for simple transportation. This isn’t a sports sedan. Shoppers choosing this Altima prioritize reliability, running costs, and space for passengers and cargo. That MPG figure is a key reason they choose this trim level. It balances everyday usability and wallet-friendly operation.

City and highway performance

The 2015 Altima 2.5 S performs well in both city and highway driving. The EPA estimates 27 MPG in the city, a number that holds up well in real-world stop-and-go traffic with frequent red lights. The 39 MPG highway figure is also impressive, making this Altima a strong choice for road trips and long commutes. While some competitors might have slightly higher numbers in one area, the Altima’s balanced performance in both driving environments gives it broad appeal.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2015 Nissan Altima 2.5 S is $1,694. This is based on driving 15,000 miles per year and using national average fuel prices. It’s a useful benchmark for comparing against other vehicles. Keep in mind that your actual fuel costs might vary depending on your driving habits, local fuel prices, and the type of fuel you use. This is not a flex-fuel vehicle, so purchasing premium fuel won’t increase the vehicle’s fuel economy or performance. The EPA’s figure uses regular unleaded fuel for its calculations.

Real-world expectations

The EPA provides a standardized testing process, but your individual fuel economy can vary. Aggressive acceleration, excessive idling, and carrying heavy loads will all reduce your MPG. However, maintaining proper tire inflation, driving smoothly, and anticipating traffic conditions will help you achieve numbers close to the EPA estimates. Most drivers say the 2015 Altima 2.5 S generally lives up to its MPG claims in everyday use, making it predictable and reliable when budgeting for fuel costs.

How it compares

The mid-size sedan market is very competitive in fuel efficiency, and the Altima faces strong competition. For example, the 2015 Honda Accord LX with its 2.4L engine also had a combined 31 MPG rating, making it very similar to the Altima. The Toyota Camry LE, another popular choice, achieved a similar combined figure of 28 MPG. The Mazda6 i Sport offered a slightly higher combined MPG of 29. These are just a few examples, but they highlight the importance of comparing specific trims and model years when evaluating fuel economy. Saving even a few MPG can translate to hundreds of dollars saved over the lifespan of the vehicle.

Tips to maximize efficiency

The Altima’s CVT (Continuously Variable Transmission) is a key part of its fuel-efficient design. This transmission keeps the engine operating at its most efficient RPM range. Avoid aggressive acceleration that forces the CVT to simulate gear changes, as this reduces efficiency. Smooth, gradual acceleration helps maximize fuel mileage.

Tire pressure plays an important role in fuel economy. Check yours regularly and ensure that your tires are inflated to the recommended pressure listed on the sticker inside the driver’s side door. Under-inflated tires increase rolling resistance, which stresses the engine and reduces fuel efficiency.

Minimize the use of accessories that place a load on the engine. Air conditioning, in particular, can noticeably impact fuel economy, especially in city driving. When possible, consider using the ventilation system without the A/C or opening the windows when driving at lower speeds.

Regular maintenance is important for keeping any vehicle running efficiently. Ensure that your Altima receives scheduled maintenance, including oil changes, air filter replacements, and spark plug replacements, according to the manufacturer’s recommendations. A well-maintained engine is more efficient. Consider reviewing all Nissan fuel economy data before your next maintenance service.

Plan routes to avoid traffic congestion. Stop-and-go traffic burns fuel. By choosing less congested routes or driving during off-peak hours, you can improve your fuel economy and reduce wear and tear on your vehicle. You can also compare ALTIMA MPG across all years to see how the 2015 model’s fuel economy compares to other model years.