Think of the 2027 ratings as two tiers set by wheel size. The 16-inch S and SV and the 17-inch SL share Nissan's 30/38/33 estimate, and the SL's membership in that group is new; last year it was rated with the SR. The 18-inch SR posts 29/36/32, a small tax for the sportiest look in the lineup.

One precision note for spec-sheet readers: these are Nissan-published EPA estimates, issued ahead of the federal database listing the 2027 Sentra, and idle stop/start comes standard to keep the city figure realistic in Metro East traffic.

• 30/38/33 mpg EPA-estimated: S, SV, SL
• 29/36/32 mpg EPA-estimated: SR
• SL joins the higher tier for 2027
• Standard idle stop/start
• Wheel size drives the rating split

The 2027 Sentra uses a 12.4-gallon tank regardless of trim, the same capacity as the 2026 model. Combined with a recommendation for regular unleaded on every grade, filling up near the Green Mount Road exits stays one of the cheaper errands of the week.

Uniform capacity also simplifies cross-shopping: no trim buys extra range with a bigger tank, so the mpg rating is the whole efficiency story.

• 12.4-gallon tank, all trims
• Carryover capacity from 2026
• Regular unleaded recommended
• No premium fuel requirement anywhere in the lineup

Do the multiplication and the 30/38/33 trims compute to 372 miles of city range, 471 highway, and 409 combined from the 12.4-gallon tank; the SR computes to 360, 446, and 397. Nissan does not publish an official range figure, so treat these as calculated estimates rather than promises.

For a Shiloh-to-downtown-St. Louis commuter logging 40 miles a day, a computed 409 combined miles translates to a fill-up rhythm of once every week and a half or so, and a single tank comfortably covers a Chicago run with miles left over.

• Computed 409 combined miles on S, SV, SL
• Computed 471 highway miles at 38 mpg
• SR computes to 397 combined miles
• Calculated from EPA estimates, not Nissan-published