Yes. The 2012 Altima uses electronic fuel injection with individual injectors for each cylinder, not a carburetor.
In that model year, Nissan offered two engines—the 2.5-liter four-cylinder and the 3.5-liter V6—both employing sequential port fuel injection to feed fuel into the intake ports. This setup is standard for modern Altimas and supports efficient combustion and lower emissions.
Engine options and fuel injection in the 2012 Altima
2.5L four-cylinder (QR25DE)
Injector setup for the 2.5L engine:
- Four fuel injectors, one for each cylinder.
- Sequential (timed) multi-point fuel injection controlled by the engine control module (ECM).
- Injectors mounted at the intake ports to deliver fuel directly into the air stream entering each cylinder.
- Fuel rail supplies pressurized fuel to all injectors in sequence.
Summary: The 2.5L uses four injectors in a sequential MPFI arrangement, one per cylinder.
3.5L V6 (VQ35DE/VQ35HR)
Injector setup for the 3.5L engine:
- Six fuel injectors, one for each cylinder.
- Sequential multi-point fuel injection (MPFI) timed to the intake strokes of the six cylinders.
- Injectors located at the intake ports for port injection.
- Shared fuel rail feeding all injectors with a common supply and return path.
Summary: The 3.5L uses six injectors in a sequential MPFI setup, one per cylinder.
Summary
In short, the 2012 Nissan Altima does have fuel injectors. Both available engines employ sequential multi-point fuel injection with individual injectors for each cylinder—four injectors on the 2.5L I4 and six injectors on the 3.5L V6—driven by the engine control module to optimize performance and emissions.