If the car doesnt have a super or turbo charger and if you dont use nitrous then yes you can use low grade fuel in the car and it wont hurt it what so ever.Although if the grade is below the reccomended octane in your manual then a knocking noise will result as the piston fires. this isn't mechanicalbut just the noise of the gas igniting
some countries use low grade fuel because of pollution and they try to make their country a beautiful none pollutional place...
Probably but you should use the grade recommended in the owners manual. All of the sensors and the computer are calibrated to the recommended fuel.
Premium Fuel 91 octane.
The 2005 Acura NSX runs on regular unleaded.
The 2004 Acura NSX runs on regular unleaded.
The 2013 Acura RDX runs on premium unleaded (required).
The 2009 Acura MDX runs on premium unleaded (required).
The 2012 Acura MDX runs on premium unleaded (required).
The 2004 Acura TSX runs on premium unleaded (required).
The 2014 Acura TL runs on premium unleaded (required).
The 2008 Acura TSX runs on premium unleaded (recommended).
The 2010 Acura TSX runs on premium unleaded (required).