26 MPG combined is a reasonable figure for the 2015 Nissan Altima 3.5L, though it hardly sets a new benchmark in the mid-size sedan category. This Altima isn’t about squeezing every last mile from each gallon, it’s about providing a readily accessible dose of V6 power without completely obliterating your fuel budget. This is the Altima for those who prioritize confident acceleration and effortless highway cruising over hypermiling. These buyers want passing power and a smooth ride, and they accept the fuel economy trade-off.

City and highway performance

The EPA estimates for the 2015 Nissan Altima 3.5L split out to 22 MPG in the city and 31 MPG on the highway. The city figure, while acceptable, reflects the engine’s relative thirst when repeatedly accelerating from stoplights and navigating congested areas. The highway MPG is more commendable; the Altima’s continuously variable transmission (CVT) and aerodynamic design help it achieve respectable efficiency on longer journeys. This difference highlights that the 3.5L V6 Altima is best suited for drivers who spend a significant portion of their time on the open road, where its power and efficiency can be better balanced.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2015 Nissan Altima 3.5L is $1,700. This figure is based on driving 15,000 miles per year, with a mix of city and highway driving, using the national average fuel prices at the time of calculation. Keep in mind that this is just an estimate, your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Even so, the $1,700 figure provides a useful benchmark for comparing the Altima’s fuel costs against those of other vehicles in its class. Be aware that fluctuating gas prices will cause this number to increase or decrease.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world fuel economy often differs. The 2015 Altima 3.5L is no exception. Drivers who frequently engage in spirited acceleration or encounter heavy traffic conditions may see figures closer to the lower end of the EPA range, or even slightly below. Conversely, those who prioritize smooth, consistent driving and avoid rush-hour congestion may find themselves achieving figures closer to, or even slightly exceeding, the EPA estimates. The key is understanding how your personal driving style and typical driving conditions impact the vehicle’s fuel consumption. Owners who check into online fuel tracking communities generally report combined MPG numbers that are fairly close to the EPA’s 26 MPG rating, suggesting the official numbers are realistic for the average driver.

How it compares

The 2015 Nissan Altima 3.5L’s fuel economy is largely in line with other V6-powered mid-size sedans of its era. For example, the 2015 Toyota Camry V6 achieved an EPA rating of 21 MPG city and 31 MPG highway, making its combined MPG very similar to the Altima. The Honda Accord V6, another key competitor, boasted similar figures. However, four-cylinder versions of these rivals offered significantly better fuel economy. Choosing an Altima 2.5S would improve fuel efficiency significantly, but at the cost of acceleration performance. For buyers focused on low fuel costs, the four-cylinder options from Nissan, Honda, and Toyota offer a good alternative. If fuel economy is important, explore all Nissan fuel economy data for options like the Nissan LEAF, or compare ALTIMA MPG across all years. But the 3.5L V6 Altima isn’t bought to be the thriftiest, it’s bought to be a little fun, and it accepts a minor penalty at the pump to deliver that.

Tips to maximize efficiency

The 2015 Altima’s CVT is designed to optimize fuel economy, but it requires a light touch. Avoid aggressive acceleration and try to maintain a steady speed whenever possible. The instant MPG readout in the instrument cluster can be a useful tool for developing more efficient driving habits. Watch how your fuel economy dips when you accelerate quickly, and consciously train yourself to accelerate more gradually.

Regular maintenance is critical for maintaining optimal fuel economy. Ensure your tires are properly inflated, as low tire pressure increases rolling resistance and reduces fuel efficiency. A poorly maintained engine will also burn more fuel, so stick to the recommended service intervals for oil changes, air filter replacements, and spark plug replacements.

Consider the road conditions you typically encounter. If you primarily drive in stop-and-go traffic, there’s only so much you can do to improve fuel economy. However, if you have some control over your route, try to choose routes that minimize idling and maximize steady-state cruising. Avoiding rush hour can make a significant difference.

Remove any unnecessary weight from your vehicle. Extra cargo in the trunk or on the roof rack adds load to the engine and reduces fuel economy. A clean and clutter-free interior translates to less weight overall, and slightly better fuel mileage. Over time, unnecessary items pile up, so clean-out the car from time to time.