Early-time radioactive signals from type Ia supernovae (SNeIa) can provide important constraints on the explosion mechanism and the progenitor system. We present observations and analysis of SN2023mnc, a SN Ia, ∼ 7 days following its discovery. Follow-up observations were conducted in opticalbands, covering phases from ∼ −4 days to ∼ 15 days relative to its g-band peak luminosity. The early photometry allows us to estimate the physical properties of the ejecta and characterize the possible divergence from a normal SN Ia; we were able to characterize it as a Type Iax supernova instead. The estimated date of explosion is t0 = 60130 MJD and implies a short rise time of trise ≈ 16 days. The apparent g-band peak magnitude and the post-peak decline rate are mmax(g) = −19.52 ± 0.47mag and ∆m15(g) = −0.825 ± 1.635 mag, respectively. Based on the light curve fitting of standard SN Ia models, the distance modulus is predicted to be 37.98 ± 0.207 mag for g band measurements, and the SN is predicted to be 394.46 ± 38 Mpc from Earth. Assuming a 56Ni powered radiativediffusion, the estimated bolometric light-curve peaks at 1.08ergs−1 and indicates that only 0.05M⊙ of 56Ni was produced, making SN 2023mnc a moderate luminosity object in the Iax class with peak absolute magnitude of MV = −16.4 mag. Comparing the observed color evolution with the predictedby different models such as deflagration-to-detonation transition and pure-deflagration scenario, the latter one is favored. The photometry of SN 2023mnc offers a unique opportunity to examine the progenitor systems and ignition process of the SNe Iax, adding weight to the population study of such sub-class SNe.