The MG3 is a small car produced by the Chinese automotive company SAIC under the British MG marque.

The new model uses an all new automotive platform with a wheelbase of 2.5 m, featuring MacPherson strut front suspension and a torsion beam rear axle.

[9][10]For 2016, the MG3 received several alterations to improve it: the installation of an EU 6 derivative of the standard 1.5-litre engine, developed by SAIC Motor UK, a stop start was fitted, and two-tone colour schemes, primarily on the red and yellow MG3's which can have either a black or white roof, were offered as options.

The MG3 Trophy Championship concept, based on the MG3 production vehicle platform and created to highlight in-house engineering, design and calibration capabilities by SMTC UK at Longbridge, continues the MG tradition of club racing.

The racing concept was created solely by a team of engineers, managed by Vehicle Engineering Specialist Adrian Guyll, and based at SAIC Motor's European Design and Technical Centre (SMTC), located alongside MG Motor UK at the Longbridge site in Birmingham.

Chinese models are available with a slightly more powerful 1.5 litre engine option mated to a four speed automatic gearbox.

According to analysis of the results of multiple crash tests by Euro NCAP, a number of issues were found including the driver's head bottoming out on the steering wheel through the airbag; "The passenger compartment remained stable in the frontal impact.

[...] However, structures in the dashboard were considered a risk to occupants of different sizes or to those sat in different positions and protection of the knee/femur/pelvis area was rated as marginal".

The rating of 3 out of 5 stars remained unchanged during Euro NCAP's annual review in July 2018, for the facelifted variant.

[25] The third-generation MG 3 was launched in Mexico on 23 May 2024, with four trim levels: Cool, Style, Excite and Elegance.

[28] The third-generation MG 3 was launched in Thailand on 16 July 2024 with pricing released later on 20 August, with two trim levels: D and X; it is only available with the 1.5-litre Hybrid+ petrol hybrid.