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After the racing success of the A6GCS and the availability of its engineering, Maserati went forward to sell a road going version called the A6G54 2000. The company invested little time and capital on it by relying on existing designs and choosing to outsource all the bodywork. Thus, no two cars were alike and each reflected the first customer's design preference. What they did have in common was a sporting pedigree from Maserati's past.

Right before the all the Maserati brothers had pulled out of the company in 1947, leaving it to Commandatore Adolfo Orsi, they designed a bulletproof inline-6 engine which would eventually power the A6G54 in its definitive form. Initially, Maserati's six was placed on a simple ladder-type tube frame with a 1.5-liter, inline-six engine producing 65 horsepower that was a low point for Maserati performance. By 1951, a two litre version of the A6 was released and featured some fancy custom bodies, but it took until 1954 to get the design right.

At that time Vittorio Bellentani was brought in to detune the A6GCS racing engine and make it suitable for GT driving. He tuned to the engine to provide a better power curve and fitted a normal wet-sump lubrication system specifically for the A6G54 2000. The twin-spark cylinder head with its 12 wire distributor was offered only as an option. It raised the ante to 190 horsepower in top form.

The chassis was built by Gilco and resembled the simple twin parallel tube design used on he first A6. Suspension upfront consisted of double wishbones with a rigid axle in rear. Steering and braking came from the A6GCS.

Second series A6G/2000s were produced from 1954 until 1957. During that period sixty examples were created despite competition from Ferrari and Fiat with their 8V. Combined with the sixteen early examples, the total production run of the A6G in two litre form was over 75 cars.

As the specification of the A6G54 resembled a sporting nature, especially the Zagato-bodied models, some examples used a special competition cylinder heads. At the time, Maserati was campaigning their A6GCS leaving the A6G54 for the most part to private entrants.

Bodywork

All the cars were sold as bare chassis to be fitted with bodies from some of the best Italian design houses. The most celebrated of these was Zagato's purposeful coupe. Zagato's treatment of the Maserati chassis was similar to the Fiat 8V coachwork from 1954 which was sculpted out of aluminum into a flowing shape. A total of nineteen Zagato Coupes were built and the first, chassis, #2013, was built as a one-of spider. These 20 or so Zagato coupes formed the first concrete relationship between the companies.

Of all the A6G2000s, the Zagato model was the most fit for racing. The methods used by Zagato ensured a lightweight construction. The body was formed, by hand, in aluminum with the Perspex windows all around. Total weight of the Zagato Berlinetta was 840kg (1852lbs). Each car had remarkable differences both inside and out. As an example chassis #2121 was the only A6 to receive the trademark Zagato double bubble roof.

Vignale and Frua made some wonderful examples on the A6G54 chassis the former making a series of striking two-tone spyders. But these lavish bodies and interiors took very long to coomplete, so Maserati turned to Allemano who made a series of pedestrian coupes that Maserati were listed in the official catalogue.

Eventually the Maserati took the responsibility of building their own bodies and series production of their first 'in house' grand tourer started with the 3500GT in 1957.