FRONT WHEEL DRIVE

Advantages
Interior space: Since the powertrain is a single unit contained in the engine compartment of the vehicle, there is no need to devote interior space for a driveshaft tunnel or rear differential, increasing the volume available for passengers and cargo.
Instead, the tunnel may be used to route the exhaust system pipes.

Cost: Fewer components overall.
Weight: Fewer components usually means lower weight.
Improved fuel efficiency due to less weight.

Improved drivetrain efficiency: the direct connection between engine and transaxle reduce the mass and mechanical inertia of the drivetrain compared to a rear-wheel drive vehicle with a similar engine and transmission, allowing greater fuel economy.
Assembly efficiency: the powertrain can often be assembled and installed as a unit, which allows more efficient production.[citation needed]
Placing the mass of the drivetrain over the driven wheels moves the centre of gravity farther forward than a comparable rear-wheel drive layout, improving traction and directional stability on wet, snowy, or icy surfaces.
Predictable handling characteristics: front-wheel drive cars, with a front weight bias, tend to understeer at the limit, which (according to e.g. SAAB engineer Gunnar Larsson) is easier since it makes instinct correct in avoiding terminal oversteer, and less prone to result in fishtailing or a spin.
The driver can control the movement of the car even while skidding by steering, throttling and pulling the hand brake (given that the hand brake operates the rear wheels as in most cases, with early Saabs being an exception).
According to a sales brochure for the 1989 Lotus Elan, the ride and handling engineers at Lotus found that "for a given vehicle weight, power and tire size, a front wheel drive car was always faster over a given section of road." However, this may only apply for cars with moderate power-to-weight ratio. According to road test with two Dodge Daytonas, one FWD and one RWD, the road layout is also important for what configuration is the fastest.
It is easier to correct trailing-throttle or trailing-brake oversteer.
The wheelbase can be extended without building a longer driveshaft (as with rear wheel driven cars).