HomeLandCar Conversion → GTA³

The GTA³ is our conversion of the model A3 based on the concept cars A1 clubsport quattro concept, (RS5) quattro concept, e-tron Spyder, and e-tron Detroit by the marque Volkswagen→Audi with a stiffened chassis and also an overworked exterior design. With the GTA³ we have defined the next generation of the so-called pocket rockets, and made more outstanding features now possible, which are the:

  • lightweight chassis,
  • sporty exterior and interior with eye candy effect,
  • high revs engine with extrem vividness and goose bumps factor, and
  • high-performant suspension with an elaborately designed geometry.

    The GTA³ features standard components of the RS and clubsport lines by the factory with many customization options for the:

  • exterior,
  • interior, and
  • drivetrain.

    Exterior Options
    For the exterior we apply parts made out of Pure Carbon™, and our Carbon Fiber-Reinforced Plastics for the:

  • diffusor,
  • wings,
  • rims, and
  • other exterior parts,

    besides additional stylistic elements, like the:

  • high-gloss paint jobs,
  • theme oriented decals, and
  • Hot Wheels® styles, as well as
  • fine leather and
  • further high-quality materials following the customer wishs.

    Interior Options
    Fine Carbon™ can also be used for the fabrication of the:

  • seats,

    while we are also offering as performance options:

  • steering wheels,
  • anti-noise system for cancelling all kinds of noise, and
  • other interior racing parts.

    Our customers have a wide choice of engines and transmission to choose from. As engines we have:

  • Volkswagen
    • R4 16 valve with 1.8 and 2.0-liter, and
    • VR6 24 valve with 3.2-liter 15° and 3.6-liter 10.6°,
  • eventually later Volkswagen→Audi→Ducati
    • V4 16 valve with 1.0 to 1.05-liter 90° of the model Desmosedici RR,
    • V8 32 valve with 2.0 to 2.1-liter 90° based on two Desmosedici RR engines,
    • V12 48 valve with 3.0 to 3.2-liter 90° based on three Desmosedici RR engines,
    • V2 8 valve with 1.2-liter 90° of the model 1199 Panigale, and
    • V4 16 valve with 2.4-liter 90° based on two 1199 Panigale engines,
    • V6 24 valve 3.6-liter 90° based on three 1199 Panigale engines,
  • Suzuki
    • R4 16 valve with 1.4 to 1.5-liter 75° of the model Hayabusa and
    • V8 32 valve 2.8 to 3.0-liter 75° based on two Hayabusa engines
  • Engine on Demand™ option for the connection of two and three engines.

    Due to the very small dimensions of the drivetrain and for a highly optimized weight distribution, we mount the engines transversely in front of the rear axle. On the side of the drivetrain further options are given with the:

  • factory transmissions
    • 6-speed manual gearbox,
    • 6-speed Direct-Shift Gearbox (DSG) with dual-clutch, and
    • 7-speed Direct-Shift Gearbox (DSG) with dual-clutch,
    and the
  • Active Transmissions™ based on our Modular Transmission™ System
    • 6-speed,
    • sequential race gearbox, and
    • single clutch or dual clutch.

    Additional optimizations are achievable with the:

  • high-performance exhaust system with optional side pipes made of
    • titanium or
    • Inconel®,
    as well as
  • ultra-performance brake system using brake discs made of
    • carbon carbon or
    • ceramic composite.


    Audi A3 ∧ Audi A5 → RS5 → quattro concept ∧ Audi A1 → A1 clubsport quattro concept ∧ e-tron Spyder ∧ e-tron Detroit → SOS GTA³
    Ducati 1199 Panigale EngineDucati Desmosedici RR Engine
    Volkswagen R4 2.0 Liter Turbocharged Stratified Injection (TSI) EngineVolkswagen VR6 3.6 Liter Fuel Stratified Injection (FSI) Engine


  • Design exterior: Foundational design by Volkswagen→Audi with overwork by Style of Speed
  • Design interior: Basic design by Volkswagen→Audi with overwork by Style of Speed
  • Drivetrain: Bioethanol and biogas, as well as synthetic and classic fuels combustion engine with optional energy regeneration systems
  • Power:
    • 195 hp with the single engines over
    • 400 hp with the double engines to
    • 600 hp with the triple engines naturally aspirated,
    • 600 hp to
    • 1000 hp with forced induction
  • Revolutions:
    • 13,500 rpm with the Desmosedici RR engine
    • 10,500 rpm with the 1199 Panigale engine
    • 11,000 rpm with the Hayabusa engine
  • Weight:
    • 1190 kg standard
    • 1090 kg with all lightweight construction options
  • Power to weight ratio:
    • 5.59 kg/hp with 195 hp
    • 2.72 kg/hp with 400 hp
    • 1.81 kg/hp with 600 hp
    • 1.09 kg/hp with 1000 hp
  • Wheelbase: 2,469 mm
  • Track front: 1532 mm (with 8.5J x 19 rims)
  • Track rear: 1498 mm (with 11J x 19 rims)
  • Length: 3,990 mm
  • Width: 1840 mm to more depending on the choice of the rims
  • Wheels front:
    • 8.5J x 19 235/35 ZR 19 to
    • 9J x 20 245/35 ZR 20
  • Wheels rear:
    • 10J x 19 265/35 ZR 19 to
    • 11J x 20 295/30 ZR 20
  • Drag coefficient: 0,31 cw
  • Seats: 2
  • Active component™: OntoLinux™,
  • Active component™ options: Active Suspension, Active Trac™, Active Transmission™, Active Shift™, Active Wing™, Active Diff- usor™, Active Light™ and Active Interior
  • Energy recovery options: Brake Energy Recovery System, Stroet- mann-Compressor™ and Regenerative Catalysator
  • Performance options: Turbocharger, Supercharger, Compound Forced Induction Architectures™ and Anti-Lag System, as well as special Push rod Suspension, Race Accumulator, Bucket Seats, Steering Wheels and Pure Carbon™ Rims

    Further informations
    Also available are the GTA³ Ultra and the GTA³ Spyder versions.

    The GTA³ series was called at first GTron™, but the engine versions that use biogas and forced induction systems primarily based on specific turbochargers are much more general, so that they became an engine class of its own and the conversion series was renamed.

    © and/or ® 2002-2012
    Christian Stroetmann GmbH