1971 was the introductory year for the "E" model in the 140 series, sporting electronic fuel injection as the hallmark feature. The Bosch D-Jet system was the first electronic fuel injection system ever and appeared at about the same time in selected Volvo, Mercedes, Porsche, and VW models. It was a huge step forward in cold start, hot start, warm up, and normal running performance while at the same time improving fuel economy, horsepower, and emissions. Other than frightening mechanics who didn't understand it, there was nothing to not like out it.
In it's introductory year of 1971 in the US, the 142 was the only model available with the "E" designation, and to punctuate it's introduction, the 142E included a number of luxury features as standard equipment. These included leather seats, overdrive transmission, polished beauty rings and center caps on the wheels, radial tires, and thicker front brake disks. And the car was only available in two colors; gold metallic, and blue metallic. All these special features were only included in 1971, with subsequent years reverting to the same features as the "S" model, except of course for fuel injection.
1971 was a transition year in other ways for the 140 series. The '71 picked up the three-piece black grill where previous years had a single piece polished aluminum grill. The hood badge disappeared at the same time as well, and the interior door arm rests changed to the newer squared off style. But the '71 retained the raised exterior door handles, and had a removable center arm rest, long shift lever, and no integrated center console.