Due to its greater rear head- and legroom, backseat passengers will be able to stretch out a lot more in the Porsche Panamera than the BMW M3. As far as headroom and legroom go, there's not much difference between the Porsche Panamera and the BMW M3 in the front seats.
With the Porsche Panamera you will definitely be making fewer stops at the gas station than with the BMW M3, due to its larger tank size and better fuel economy.
There are a lot of factors to consider when calculating the overall cost of a vehicle. The main consideration is Manufacturer's Suggested Retail Price (MSRP). The Porsche Panamera will definitely make more of a dent in your wallet than the BMW M3, which has a much lower MSRP. Another consideration is the Destination Charge, which is a standard charge for transporting the vehicle to the dealer from where it's built. The Porsche Panamera will cost more in transportation costs than the BMW M3.
Since the Porsche Panamera is much wider than the BMW M3, finding a wide enough spot in a parking lot may be a bit more challenging. If you go with the Porsche Panamera, you may be circling the block looking for a space large enough to park more often than with the BMW M3.
With somewhat higher torque, the engine of the Porsche Panamera transmits a bit more power to the wheels than the BMW M3.
The Porsche Panamera has a larger turning radius than the BMW M3, making it slightly more difficult to maneuver in and out of tight spots.
In terms of horsepower, it's basically a tie between the Porsche Panamera and the BMW M3.
In terms of seating you'll be able to fit the same number of people in both the Porsche Panamera and the BMW M3. With its significantly greater cargo capacity, the Porsche Panamera will be able to haul more equipment or luggage than the BMW M3.
The Porsche Panamera comes with essentially the same basic warranty as the BMW M3.
Compare the 2014 Porsche Panamera and the 2013 BMW M3.
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MSRP*: $78,100 - $200,500
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|Cash Back Rebate:||Visit Rebate Center||Visit Rebate Center|
|Low APR Loan:||--||As low as 3.99%|
|Lease Incentive:||As low as 4.80%||As low as 4.08%|
|City MPG:||15 - 18||14|
|Highway MPG:||24 - 28||--|
|Seating Capacity:||4 - 4||4 - 4|
|Basic Warranty:||4 years/50,000 miles||4 years/50,000 miles|
Days on Lot measures the average number of days a model sits on a dealer's lot before it's sold. This is one predictor of a dealer's willingness to negotiate.
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*MSRP and Invoice prices displayed do not include applicable gas taxes or destination charges.