Small dog owners usually choose between two car seat styles: a passenger-seat booster or a center console dog car seat. Both can work, but they solve different problems.

Passenger dog seats
A passenger-seat dog seat gives your pet a larger area and can work well for dogs who need more space. The tradeoff is that it takes up a full seat, which may be inconvenient for everyday driving, errands, or shared rides.
Center console dog car seats
A center console dog car seat sits on the armrest between the front seats. It keeps small dogs close without using the passenger seat. For many dachshunds, this position feels reassuring because they can stay near their person while having their own defined space.

Why dachshunds may need an extra-long version
Dachshunds are long-bodied dogs, so a standard console seat may be too short. An extra-long version gives them more room to lie flatter and avoid feeling cramped during short trips or daily drives.
What features matter most?
Look for raised sides, secure adjustable straps, two safety tethers, washable fabric, and a water-resistant liner. For dachshunds, also check total length, weight capacity, and whether the front pillow can fold down as a chin rest.
Which one should you choose?
Choose a passenger-seat dog seat if your dog is larger or needs a wide space. Choose a center console dog car seat if your dog is small, your car has a suitable armrest, and you want to keep your passenger seat free.
For dachshunds under 18 lb / 8.2 kg, an extra-long center console dog car seat can be a practical balance of comfort, closeness, and space-saving design.
Save passenger space on daily drives
For a compact option that keeps small dogs close, see the extra-long dachshund center console dog car seat here: Dachshund Center Console Dog Car Seat | Extra Long.