[en] We studied the eight lowest-lying states of the CF₂Cl₂⁺ ion, which were observed in the PE spectra by Pradeep and Shirley, using the complete active space self-consistent field (CASSCF) and multiconfiguration second-order perturbation theory (CASPT2) methods. The CASPT2 calculations predict the equilibrium geometries, adiabatic (T₀) and vertical (T_v) excitation energies, relative energies (T_v^') at the geometry of the molecule, and the CASSCF calculations predict vibrational frequencies. On the basis of the CASPT2 T₀ calculations, we assign the X, A, B, C, D, E, F, and G states of the CF₂Cl₂⁺ ion to 1²B₂, 1²A₂, 1²B₁, 1²A₁, 2²B₂, 2²B₁, 2²A₁, and 2²A₂, respectively. Our A²A₂ and B²B₁ assignments are in line with the assignments of Pradeep and Shirley, but our F(2)²A₁ and G(2)²A₂ assignments are different from the F(2)²A₂ and G(2)²A₁ assignments presented in the experimental papers. The CASPT2 T₀ values for 1²B₁ and 2²B₂ are in good agreement with the available experimental values, and the CASPT2 T_v^' values are in very good (for 1²B₂, 1²A₂, 1²B₁, 1²A₁, and 2²B₂) or reasonable (for 2²B₁, 2²A₁, and 2²A₂) agreement with the experimental values. The CASSCF wavefunction of the 2²A₁ state at the geometry of the molecule and the CASSCF wavefunctions of the 2²B₂, 2²B₁, and 2²A₂ states at the CASPT2 geometries are found to have multi-configurational character. The CASSCF frequency values of the total symmetric modes in the 1²B₂, 1²A₂, 1²B₁, and 2²B₂ states are comparable with available experimental data