Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. The Kia is substantially cheaper to get to the dealership than the Audi A6.
The Audi pales in comparison to the Kia Soul in terms of gas mileage.
The Audi consumes a lot of gasoline compared to the Soul.
Regarding MSRP, the Kia Soul costs tremendously less than the Audi.
Utility
Neither the Audi A6 nor the Kia Soul has a marked advantage in terms of seating capacity.
Convenience
The Kia's fuel tank will need to be replenished more often than the unit in the Audi.
Comfort
Taller drivers will significantly enjoy the extra head room in the Kia Soul's front cabin compared to the Audi A6.
The Kia Soul offers more head- and leg-room to your passengers than the Audi A6 does.
Dimensions
The Audi A6 is tremendously heavier than the Soul.
Your wallet will hurt more every time you fill up the A6 than the Kia Soul because of its bigger tank.
The Kia Soul fits in smaller parking spaces than the Audi A6.
The A6's longer wheelbase will result in a smoother, more stable ride; however, the Kia Soul may give a more agile feel in daily traffic.
Performance
As far as horsepower, the Audi A6 packs quite a punch and will knock the Kia Soul down a few rungs. On the other hand, bear in mind that high horsepower engines often command higher insurance premiums.
With that kind of horsepower, the Audi A6 is a true speedster.
Handling
With its tighter turning radius, the Kia Soul is definitely nimbler than the Audi A6, something to consider if you do a lot of city driving; on the other hand, note that a vehicle with a tight turning circle may feel a bit twitchy on the highway.
Drivetrain
The Audi's engine is tremendously more massive than the Kia Soul's. Bear in mind that more massive engines may use more gas than smaller ones.
Torque is the force that lets you accelerate quickly, and in this respect, the Audi A6 is tremendously more powerful than the Soul.
Warranty
The basic after-sale protection that comes with the Audi A6 isn't quite as generous as the Kia Soul's.