The 1620 is a Mercedes-Benz classic, sold for 15 years and is one of the trucks that most marked the history of transportation, with unmistakable design and reliability. The new HPN cabin was completely new and developed with the Brazilian market in mind, with straighter lines, hood and fenders tilting forward. This style was based on Mercedes' self-confidence in the quality and acceptance of its products, as other manufacturers migrated to advanced cabins. In fact, Mercedes would also launch its advanced cabin models shortly after, in 1991, without, however, removing the traditional ones from the line. In the early 90s, the L-1621 was also launched, a more powerful model, which received the intercooled engine generating 210 hp and 67 kgf.m of torque. Even though it was manufactured for a short time, it would make its fame in the series, being the closest predecessor of the 1620. In 1996, the HPN line underwent its first update, in reference to the 40th anniversary of the 1620. On the anniversary of the brand in the country, the Brazil Series was launched, the first three models were the L-1218, 1418 and finally the first model of the famous L-1620, which had the OM-366 LA engine, turbocharged and intercooled, the same as the 1621 but with updates for Euro 1 standards, this first model generated 204 hp, the gearbox was 5 speeds, and a Rockwell double reduction differential, the truck was offered in the L and LK versions. The L-1620 would become the brand's best-selling model, best-seller for several years in a row, it would be considered the successor to the 1113 and 1313 due to its acceptance, low operating cost and number of sales. Even though Mercedes-Benz offered increasingly modern models, it continued to be the most sought after, a good example of this was the launch of the L-1622 EL truck, along with 1218 and 1418 electronics, the 1622 was prepared to replace the then 1620 in the early 2000s, however the more modern version was not successful in the Brazilian market and ended up being withdrawn from the line in 2004, the 1620 would continue as the flagship of the Mercedes medium-sized trucks, and would receive several mechanical improvements afterwards, even because Volkswagen trucks was quickly approaching, in 2005, VW launched the Constellation line, and for the first time closed the year as the largest Brazilian truck manufacturer, surpassing MB that year that had held the title for decades. MB, however, had been renewing its entire product line, including new electronic engines, and began offering new families of trucks, such as the Accelos in 2003, Atego in 2004, and Axor in 2005. The old advanced cabin line launched in 1991 also remained in line and received updates. The 1620, as it was still a very important model for the brand, with significant sales numbers, underwent several mechanical and aesthetic improvements, with the engine now generating 211 hp and 71 mkg.m, HL5 differential, Top Brake, 6x2 factory, and 6-speed gearbox, the last being an Over Drive. Finally, the 1620 was divided into two versions, the Classic, which kept the 211 hp engine, and the electronic, which started to receive the OM-906 engine, the same one that was being used in the Atego 2425, but the electronic 1620 had 231 hp and 83 kgf.m of torque. The 1620 duo, classic and electronic, continued to be sold alongside the other modern models, when the end of this great classic, after 15 years, was announced by Mercedes. And the new ATRON line was announced, encompassing the replacement for the 1620, called the 2324, accompanied by a smaller brother, the 1319, and the replacement for the 1634, a direct descendant of the 1935 and one of the brand's most famous mechanical horses, now called the Atron 1635, and finally, the last remaining of the advanced cabins launched back in 1991, the Atron 2729 6x4. The 2324 had its name representing power and GVW, the new engine was the OM 926LA, with 238 hp and 87 kgfm of torque, a model manufactured until 2015, and to the dismay of big Mercedes fans, it was taken off the line, with the right to a special edition of 60 units, celebrating Mercedes' 60th anniversary in Brazil. The 1620, although by today's standards it has low power and a cabin that is not very suitable for long distances as it did not even have a bed throughout its history, its success is due to the low operating cost offered, in addition to the high resale value and robustness to face the conditions of Brazilian roads, with more than 60,000 units sold in the model's history.