R5 five-door model was presented in August. TL gained a new engine.
The higher-specification R14 TS was added to the lineup with unchanged mechanical specification. Mild facelift with front indicators moved from the bumper next to the headlights and model name changes: the R14 L became the R14, while the R14 TL became the R14 GTL.
Rear three-point seatbelts are made standard on all 16 models. The TL Automatic end of prod.
The estate version of the 18 was launched on 1 March 1979. The R18 Break is available in TL and TS model variations. In the spring a basic model simply called "Renault 18" both a saloon and estate were introduced. Also beginning in 1979, the 18 Automatic became a separate model (with GTL trim) rather than simply a transmission option.
Revisions to all R20 models: driver's side rear fog light and rear seat belts. The R20 TS got a new cooling fan, inertia reel rear seat belts, a new windscreen wiper switch, and the choice of a 5-speed gearbox. Introduction of the R20 LS. It has the same mechanical specification as the R20 TS but the equipment specification of the R20 TL. September - introduction of the R20 Diesel (in TD and GTD forms) with a new 2,068 cm³ Diesel (67 bhp) engine, 5-speed gearbox, negative offset front suspension, and larger four-stud wheel rims. The R20 TD is an equivalent to the R20 TL/LS, while the R20 GTD: equivalent to the R20 TS only with added power-steering.
The R30 TS got a more powerful 130 PS (96 kW) engine, and small pocket in the drivers sun visor.
The Rodeo 6 was improved and adopted the 1289 cm³ engine of the Renault 5.