You won't blow up if you run Regular in it, but these engines are made to run on Premium.

See, Premium fuel is burnt almost completely, and thus brings greater power and fuel economy to your engine. This, in turn, will make your engine last longer.

If you use Regular on an engine designed to run on better stuff, you will get less power, worse fuel economy, and lower engine life. Plus the engine may knock and be rougher than usual.

You're basically saving $5-10 per full fuel-up. However you will burn it faster, and cause long term damage. Not worth it at all!

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2008 ML320 CDI | Iridium Silver | Black ARTICO Leather | Premium Package (H/K Logic7, Parktronic, Rear Heated Seats, Rear Power Hatch, DVD Nav, 10-way Front Seats w/ Memory) | Backup Camera | Aluminum Running Boards | 4500K MTEC Low-beam HID | 30% Metallic Tint | Boomerang2 Recovery System | Weathertech Front Floorliners | Bridgestone Blizzak DM-V1 Winter Tires