I'd drive the Benz all day long for $.60/ mile. My wife in a former job had both situations - mileage and company car. She was allowed to drive the company car anywhere - weekends, errands, etc. Will you be allowed to put on personal miles? But the company included a "imputed income" amount on her W-2 form, so it technically was a taxable benefit. The personal car mileage was a reimbursement, so not taxible. You are paying insurance and the car still depreciates sitting in the driveway. May as well enjoy it. My $.02.

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BillS