[1] This was also the year that cross town rival Lincoln offered a V8 luxury sedan and several different coachwork choices, while the introduction of the Packard Twin Six appeared in 1916.

For model year 1918, Cadillac offered a new coachwork option called the Type 57 Suburban which could accommodate seven passengers with a 132 in (3,353 mm) wheelbase, and was the first time GM used that description for one of their products with a retail price of US$4,090 ($82,850 in 2023 dollars [5]).

A new commercial coach choice labeled US Government Limousine was offered in addition to the ambulance, police patrol and hearse, and the cylinder heads on the V8 engine were now detachable for maintenance .

The previous Type 57 had earned a favorable reputation with its deployment during the war, and orders for the latest model contributed to long waiting lists.

As before, there were various appearance, equipment, standard and optional feature changes to include an extendable trunk rack on the rear of the most body styles, running board kick plates on five-passenger sedan and phaeton, along with the inclusion of nickel-plated exterior lights and radiator shell offered.

For the first time, the prices were reduced across all models following an automobile industry trend due to increased production schedules, improved manufacturing efficiency and economic pressures.

[1] Although this car did not sell in vast numbers due to the price, it introduced the modern gearshift and handbrake deployment of an automobile that is still used today shared with other GM products.

[6] In May 1916, Erwin "Cannonball" Baker and William Sturm drove a Cadillac Roadster from Los Angeles to New York in 7 days, 11 hours, and 52 minutes.