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Transporting Your Dog in the Car: Restraints, the Law, and Getting Used to It

Under traffic law, dogs count as cargo in the car and have to be secured. Without a restraint you risk a 35-euro fine, or 60 euros and a point on your license if you put others at risk. In a 50 km/h crash, a 20 kg dog turns into a projectile that hits with around 500 kg of force. The safest method is an aluminum crate in the trunk.

A white dog with pointed ears sits in the car, secured with a dog seatbelt, while the landscape passes by.
The Key Points at a Glance
  • Required: dogs have to be secured in the car (Road Traffic Act § 23)
  • Fine: 35 euros without a restraint, 60 euros + 1 point if you put others at risk
  • Crate: the safest method, ideal in the trunk
  • Dog seatbelt: the cheapest option, only with a crash-tested safety harness
  • Barrier: good for large dogs in the trunk, has to fit the car model
  • Never leave your dog alone in the car (the interior tops 50°C in 30 min at 30°C outside)

Under § 23 of the Road Traffic Act, your dog must not distract the driver and has to be secured so it is not thrown through the car during a hard stop. Violations: a 35-euro fine. With endangerment: 60 euros and a point on your license. If you cause an accident with an unsecured dog, your insurer can reduce or refuse the payout for gross negligence.

Restraint Methods Compared

MethodSuitable forCostSafety
Crate (aluminum)All sizes50-500 eurosVery high
Crate (plastic)Small to medium dogs30-150 eurosHigh
Dog seatbelt + safety harnessSmall to medium dogs20-80 eurosMedium
Barrier (vehicle-specific)Large dogs in the trunk80-300 eurosHigh
Dog seat (Isofix)Small dogs up to 9 kg170-1,000+ eurosHigh

Crate

A fluffy Siberian Husky puppy with bright blue eyes stands in a car, peeking curiously out of a pink-and-beige dog crate.

The safest method. Aluminum crates offer the best protection; plastic crates are lighter and cheaper. Safest when placed in the trunk, sideways to the direction of travel. Small crates also fit in the footwell behind the front seats.

Calculating the right size: Length = dog length + half a leg length. Width = twice the dog's width. Height = head height + 5 cm. The dog has to be able to turn around and lie down comfortably, but should not have so much room that it gets thrown around.

Dog Seatbelt with Safety Harness

A black-and-white dog sits on the back seat wearing a safety harness. The dog looks content, its mouth open and its tongue hanging out.

The cheapest option. The belt attaches to the Isofix system or the seatbelt anchor and connects to a crash-tested safety harness. Never attach it to the collar (risk of choking, possible broken neck).

What to look for: The harness has to be crash-tested (ECE or DIN certification mark), well padded across the chest, adjustable, and made of tear-resistant material. A regular walking harness is not enough; it is not built for impact forces. Set the belt length so your dog cannot reach the backrests of the front seats.

Barrier

A fluffy white dog stands in a metal crate in the cargo area of an SUV. The sky is clear and the surroundings are green.

For large dogs in the trunk. Use only vehicle-specific barriers; universal grilles and nets do not offer enough protection in an emergency. Nets can tear and often do not sit flush against the car wall. The trunk should not be too large, so your dog is not thrown against the barrier in a crash.

Dog Seat

For small dogs up to 9 kg. It mounts like a child seat via Isofix. The dog is fixed into the seat with a strap, and the padded side walls absorb the impact. It is the most expensive option price-wise (170-1,000+ euros), but it offers high comfort and safety.

Where in the Car?

SpotSuitable forRestraint method
Back seatSmall to medium dogsBelt + harness or dog seat
TrunkMedium to large dogsCrate or barrier
Footwell (back seat)Small dogs, short tripsSmall crate
Front passenger seatNot recommendedAirbag danger

Getting Used to Car Rides

Step 1: Let your dog explore the car without driving. Practice getting in and out, and reward with treats.

Step 2: Start the engine, let it run briefly, then switch it off again. Reward.

Step 3: Drive a short distance (5 minutes). Reward at the destination.

Step 4: Gradually lengthen the route. Before longer trips: give your dog plenty of exercise first, so it is tired and sleeps.

For motion sickness: Stop feeding 3-4 hours before the drive. Crack a window for fresh air. If the nausea keeps up: ask your vet about medication.

Longer Trips

Take a break every 2-3 hours for exercise and water. Never leave your dog alone in the car: at 30°C outside, the interior temperature rises to 40°C in 10 minutes and over 50°C in 30 minutes. Even a slightly open window does not prevent this. Sun shades on the windows protect against direct sunlight.

Were You Paying Attention?

Question 1 of 3

Do you have to secure your dog in the car?

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Frequently Asked Questions

Do I have to secure my dog in the car?

Yes, it is required by law (Road Traffic Act § 23). Dogs count as cargo and must be secured so they do not distract the driver and are not thrown through the car during braking. Without a restraint: a 35-euro fine.

Which dog restraint for the car is the safest?

Aluminum crates offer the best protection, followed by plastic crates and vehicle-specific barriers. Dog seatbelts are the cheapest but least safe option. The right size and proper installation are what matter most.

Where should my dog sit in the car?

On the back seat (with a seatbelt or dog seat) or in the trunk (with a crate or barrier). Not on the front passenger seat: the airbag can be life-threatening in a crash.

How do I work out the right crate size?

Length: dog length + half a leg length. Width: twice the dog's width. Height: head height + 5 cm. The dog has to be able to turn around and lie down, but should not have so much room that it gets thrown around.

Claudia Weise

Written by

Claudia Weise

Editor-in-Chief, Certified Nutrition Consultant & Animal Welfare Practice

Editor-in-Chief at HundeoCertified Dog Nutrition ConsultantActive in animal welfare and with dogs every day

Claudia has worked closely alongside Enrico on Hundeo since the early days. She is a certified dog nutrition consultant, is active with animal welfare topics and dogs every day, and brings that practical experience into health, care, breed, and accessory content as Editor-in-Chief.

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