When using a rental car, child seats are mandatory if you have small children. "How do I prepare a child seat when using a rental car?" "How much does it cost to rent a child seat with a rental car?" "What should I do if I don't know how to install a child seat?"

To answer these questions and ensure safe rental car use with children, we'll explain in detail the key points for renting, average prices, and installation methods for child seats.

1. Are Child Seats Mandatory in Rental Cars? Laws and Precautions Explained

Even when using a rental car, child seats are mandatory for children under 6 years old (Road Traffic Act, Article 71, Paragraph 3, Item 3).

Most rental car companies offer child seat rentals, but availability is limited, so advance reservations are required. If you already own a child seat, you can bring it, but whether it can be installed depends on the vehicle type, so you should confirm in advance.

2. Child Seat Types and How to Choose

When renting a child seat for a rental car, you must choose one that matches your child's age and physique.

Age	Seat Type Used	Features
Approx. 0-1 years old	Infant seat (rear-facing)	For newborns, designed to absorb impact
Approx. 1-4 years old	Child seat (forward-facing)	Securely fixed to the seat for stability
Approx. 4-12 years old	Booster seat	Two types: with backrest or just booster cushion, used with seatbelt

The number of available seats varies by rental car company, so always check availability when booking. Sapporo Rent-a-Car offers all types: infant seats, child seats, and booster seats.

3. Average Child Seat Rental Fees

Child seat rental fees vary by company, but generally range from ¥500 to ¥1,100 per day.

Rental Car Company	Child Seat Fee	Notes
Company A	¥1,100 / 1 rental	ISOFIX compatible
Company B	¥550 for up to 3 days ¥1,100 for 4-6 days¥1,650 for 7-9 days, etc.	Max ¥2,750 per month
Company C	¥1,100 / 1 rental
Sapporo Rent-a-Car	¥110 / day

Sapporo Rent-a-Car charges per day, making it easy to understand (you only pay for what you use) and convenient for both short-term and long-term rentals. You'll find our rates are very competitive compared to other rental car companies.

4. How to Rent a Child Seat for a Rental Car

When renting a child seat for a rental car, it will be rented as an option for the rental car. As mentioned, child seats are limited, so they might not be available if you try to rent one on the day. If you have small children but haven't reserved a child seat and none are available, you might not be able to rent the car itself. Please be aware. When renting, knowing your child's age (in months), height, and weight will help the rental company determine which seat to provide.

5. How to Install a Rental Car Child Seat

Child seats are crucial safety devices for children. Some rental companies require you to install them yourself, with staff support. This is to clarify responsibility in the event of an accident. While support is provided, the renter must ensure proper installation.

① Differences Between Seatbelt Installation and ISOFIX

Seatbelt-secured child seats are installed by following the guides on the seat itself. They are versatile and can be installed in many car models, but they can be a bit tricky to set up.

On the other hand, "ISOFIX" is a dedicated system for child seat installation, using latches for easy and secure fastening.

However, both the child seat and the vehicle must be ISOFIX compatible.

② Tips for Correct Installation

While there's no legal requirement for child seat placement, they are often installed in the rear seats. This is because airbags in the front passenger seat can cause unexpected injuries. However, the rear seat also carries the risk of greater impact in a rear-end collision. If you're unsure, it's best to ask the rental car company. After installation, shake the seat to ensure it is securely fixed. If it's loose, the seat's purpose is lost. After placing the child, adjust the shoulder and lap belts appropriately, and finally check that the seatbelt is not twisted or loose. ※If you have any questions about installation or operation, don't hesitate to ask the staff; they should be happy to help.

6. Summary

Advance booking is required for car rental child seats. SAPPORO RENTA LEASE offers them at a clear price of 110 yen per day, a great deal compared to competitors. While child seats are legally mandatory for children under 6, for safety, a booster seat is recommended for those aged 6 and over who are under 140cm tall. Beyond age, it's crucial to choose a child seat that fits the child's physique, understand the differences between ISOFIX and seatbelt installation, and install it correctly. Rent a child seat and enjoy a drive with the whole family!