Constraints obtained for the age and radius of CoRoT-2 with different assumptions. The left panels correspond to results obtained by neglecting the effect of spots. The right panels assume an additional uncertainty in the derived T_eff due to a 0% to 20% fraction of spots. From top to bottom, the panels are: a) Results obtained with the full CESAM calibrated evolution grid; b) results obtained with CESAM with a mixing length parameter α = 0.85α_⊙; c) same as previously but with α = 1.15α_⊙; d) results obtained with the calibrated CESAM evolution grid but a constraint on the stellar density obtained from Alonso et al. (2008) instead of Gillon et al. (2010); e) results obtained with the YY tracks (Demarque et al. 2004); f) results obtained with the BCAH98 tracks (Baraffe et al. 1998). The colored area corresponds to constraints derived from stellar evolution models matching the stellar density and effective temperature within a certain number of standard deviations: less than 1σ (red), 2σ (blue), or 3σ (yellow).