MAN A21 Caetano Enigma — Portuguese City Bus Mod

MAN A21 Caetano Enigma — Portuguese-Bodied Diesel & CNG City Bus Mod for Proton Bus Simulator

The MAN A21 Caetano Enigma combines the MAN Lion's City A21 chassis with the Portuguese-built Caetano Enigma low-floor urban body, produced by Salvador Caetano in Vila Nova de Gaia, Portugal. This Proton Bus Simulator mod captures the partnership between German chassis engineering and Portuguese bodywork that defines Lisbon's Carris and Porto's STCP urban fleets — shipped with both Diesel (D2066 / NL263) and CNG (E2876 / NL273) engine variants in the same package.

Highlights and Features

• Drive the Portuguese Caetano Enigma low-floor urban body fitted to the MAN Lion's City A21 chassis.
• Choose between Diesel (D2066 11-litre, NL263 chassis) and CNG (E2876 12.4-litre, NL273 chassis) engine variants in one package.
• Operate the bus model widely deployed by Lisbon's Carris and Porto's STCP municipal transit authorities since the mid-2000s.
• Run smoothly on Android with mobile-tuned textures preserving the distinctive Caetano Enigma body design detail.

Compatibility and Technical Details

About the Real MAN A21 Caetano Enigma

The Caetano Enigma is a low-floor urban bus body built by Salvador Caetano at the company's plant in Vila Nova de Gaia, Portugal — Salvador Caetano was founded in 1946 and is Portugal's largest bus and coach builder, with a long-standing partnership fitting Caetano bodies to MAN, Mercedes-Benz, and Volvo chassis. The Enigma model entered service in the mid-2000s on the MAN A21 chassis (NL263 diesel or NL273 CNG, both powered by the same MAN D2066 11-litre diesel or E2876 12.4-litre CNG engines used across the wider Lion's City family) and became the standard urban fleet vehicle for Carris in Lisbon and STCP in Porto, with additional units operating in Madrid (EMT) and other Iberian municipal authorities. The MAN A21 / Caetano Enigma partnership represents the German chassis + Portuguese body model that has defined Iberian urban transit for two decades.

Credits

Original asset adapted from a Salvador Caetano OMSI 2 Porto bus mod. Conversion to Proton Bus Simulator: Bus Simulation Channel. Sound design and engine photo: Nunekas Rodrigues. Texture optimization for mobile performance: Proton Bus Mods. Thanks to the original author for the authorization.