Vehicle designed to reduce vibrations of air condition compressor

The invention relates to a motor vehicle equipped with an internal combustion engine constituting a power unit supported by suspension blocks. The internal combustion engine is provided with a first pulley associated with a crankshaft and a second pulley associated with a compressor equipping an air conditioning loop. The first pulley and the second pulley comprise a reduction ratio D. The internal combustion engine has an idle speed R. The power unit comprises a maximum vibration frequency F on the suspension blocks. The reduction ratio D satisfies the following inequality [1]: Cs x F x 60 / R < D in which Cs corresponds to a safety coefficient.