If you are referring to a comparison of gas engine models, no.

The 2006 V6 gas model is the E350 with a DOHC 268 hp engine.

The above is correct as the only US model designated the E320 in 2006 is the straight 6 diesel engine.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record