The yields of various fission products in the 11.5, 13.4, 15.0 and 17.3MeV bremsstrahlunginduced fission of ²³⁸U have been determined by recoil catcher and an off-line γ-ray spectrometric technique using the electron linac, SAPHIR at CEA, Saclay, France. The mass yield distributions were obtained from the fission product yields using charge-distribution corrections. The peak-to-valley (P/V ) ratio, average light mass (<A_L^>) and heavy mass (<A_H^>) and average number of neutrons (v) in the  bremsstrahlunginduced fission of ²³⁸U at different excitation energies were obtained from the mass yield data. From the present and literature data in the ²³⁸U(γ, f) and ²³⁸U(n, f) reactions at various energies, the following observations were obtained: i) The mass yield distributions in the ²³⁸U(γ, f) reaction at various energies of the present work are double-humped, similar to those of the ²³⁸U(n, f) reaction of comparable excitation energy. ii) The yields of fission products for A = 133–134, A = 138–140, and A = 143–144 and their complementary products in the ²³⁸U(γ, f) reaction are higher than other fission products due to the nuclear structure effect. iii) The yields of fission products for A = 133–134 and their complementary products are slightly higher in the ²³⁸U(γ, f) than in the ²³⁸U(n, f), whereas for A = 138–140 and 143–144 and their complementary products are comparable. iv) With excitation energy, the increase of yields of symmetric products and the decrease of the peak-to-valley (P/V ) ratio in the ²³⁸U(γ, f) reaction is similar to the ²³⁸U(n, f) reaction. v) The increase of v  with excitation energy is also similar between the ²³⁸U(γ, f) and ²³⁸U(n, f) reactions. However, it is surprising to see that the <A_L^> and <A_H^> values with excitation energy behave entirely differently from the ²³⁸U(γ, f) and ²³⁸U(n, f) reactions.