Full Tank Return (Mantan-gaeshi) — The Basic Rule
When you rent a car in Okinawa, the first rule to know is mantan-gaeshi, meaning "return the car with a full tank." Nearly every rental car company enforces this rule. If you return the car without a full tank, the company will charge you for fuel at their own rate — typically 30-50 yen or more per liter above market price. Always fill up yourself before returning.

Practical tips for full tank return:
- Fill up at the nearest station right before returning. Filling up too early means you'll burn fuel on the way back
- Always keep your receipt. Some companies ask to see it at return
- Most rental cars use Regular gasoline. Confirm the fuel type when you pick up the car
- Okinawa's main island is about 106km north to south. A typical day of sightseeing covers 50-100km. Compact car fuel efficiency is about 15-20km/L, so daily fuel costs run roughly 500-1,000 yen
Gas Station Brands and Prices in Okinawa
Gasoline prices in Okinawa are about 5-10 yen/L cheaper than the mainland average. As of 2024, regular gasoline averages about 165-175 yen per liter, thanks to government subsidies and remote island subsidies.
Major gas station brands:
- ENEOS — Japan's largest gas station chain and the most common in Okinawa. Found along Route 58, Route 329, and throughout Naha
- Idemitsu — The second most common brand, mainly in Naha and central Okinawa
- Cosmo Oil — A few stations in central and northern areas
- Local independents — Independent stations not affiliated with major chains, often slightly cheaper

Gas Stations Near Major Tourist Spots
| Tourist Spot | Nearest Gas Station | Distance |
|---|---|---|
| Naha Airport (before return) | ENEOS Toyosaki, Idemitsu Oroku | 5-10 min |
| American Village | ENEOS Chatan, Idemitsu Mihama | 3-5 min |
| Manzamo | ENEOS Onna | 5 min |
| Churaumi Aquarium | ENEOS Motobu, Idemitsu Nago | 10-15 min |
| Sefa Utaki | ENEOS Nanjo | 10 min |
How to Use Self-Service Gas Stations
About 60-70% of Okinawa's gas stations are self-service. Full-service stations exist but are 5-10 yen per liter more expensive. Here's a step-by-step guide for first-timers:
Step 1: Park — Pull up to the pump. Check which side your fuel cap is on and park accordingly
Step 2: Static discharge — After exiting, touch the static discharge pad (a green pad on every pump). This prevents static-caused fires
Step 3: Payment method — Select cash or credit card on the touch panel. Most international credit cards work (Visa, Mastercard, JCB)
Step 4: Fuel type — Rental cars are virtually always Regular (red nozzle). Never select High-Octane (yellow) or Diesel (green)
Step 5: Amount — Select Mantan (Full Tank). Fixed-amount and fixed-volume options exist, but full tank is the right choice before returning
Step 6: Pump — Insert the nozzle and squeeze the lever. It stops automatically when full
Step 7: Receipt — Print and keep your receipt

Nozzle Colors by Fuel Type (Don't Mix Them Up!)
| Fuel Type | Nozzle Color | Japanese | Usage |
|---|---|---|---|
| Regular Gasoline | Red | レギュラー | Most rental cars (90 octane) |
| Premium Gasoline | Yellow | ハイオク | Luxury/imported cars only (100 octane) |
| Diesel | Green | 軽油 | Diesel vehicles only (wrong fuel = breakdown!) |
Gas Stations Near Naha Airport — Your Last Stop Before Return
The final fueling point before returning your rental car is the most important stop of your trip. Skip it, and the rental company will charge premium rates.
Recommended stations near Naha Airport:
- ENEOS Toyosaki — Near Ashibinaa Outlet Mall. About 10 minutes from the airport. Self-service with competitive prices
- Idemitsu Oroku — Along Route 331. About 7 minutes from the airport
- ENEOS Akamine — Near Yui Rail Akamine Station. About 5 minutes from the airport
Important: There is no gas station directly at Naha Airport. Complete fueling at least 30 minutes before your return time. For early morning flights, consider filling up the night before.
How to Use Coin Parking
In Okinawa, especially central Naha, you'll frequently use coin parking — Japan's time-based paid parking lots.

How coin parking works:
- Enter — Park in an empty space. A lock plate rises from the ground to lock your car in place
- When leaving — Enter your parking number at the payment machine
- Payment — Cash (100-yen, 500-yen coins, 1,000-yen bills). Some accept credit cards and e-money
- Release — After payment, the lock plate lowers and you can exit
Parking Prices by Area
| Area | Hourly Rate | Max Rate (24hr) | Notes |
|---|---|---|---|
| Naha Kokusai Street area | 200-300 yen/30min | 1,200-2,000 yen | Higher on weekends/holidays |
| Naha city (other areas) | 100-200 yen/30min | 800-1,500 yen | Many near Omoromachi DFS |
| American Village | Free | Free | Large free lot for visitors |
| Onna/Nago | 100-200 yen/60min | 500-1,000 yen | Only paid near tourist spots |
| Churaumi Aquarium | Free | Free | About 1,800 spaces |
| Shuri Castle | Free (underground) | Free | 320 spaces. May fill up mornings in peak season |
Parking at Major Tourist Spots
Naha Area
Kokusai Street: No parking on the street itself. Use nearby coin parking or Tsuboya Yachimun Street parking (300 yen/60min). Tip: The Kenmin Hiroba underground lot at the west end charges 350 yen/hour, max 2,000 yen — relatively affordable.
Shuri Castle: Free underground parking for 320 cars. You can drive up near the summit. During Golden Week and summer, arrive before 10 AM.
Central Area
American Village: Free large-scale parking for about 1,500 vehicles. No parking worries.
Manzamo: Free parking for about 200 cars, next to the visitor center built in 2020.
Northern Area
Churaumi Aquarium: Ocean Expo Park offers free parking for about 1,800 cars. Despite being Okinawa's biggest attraction, the lots rarely fill up. Use Parking Lot P7 (closest to the aquarium).
Kouri Island: Kouri Ocean Tower free parking for about 200 cars. Immediately right after crossing Kouri Bridge.

Okinawa Expressway — Highway Complete Guide
Okinawa's only expressway, the Okinawa Expressway, runs about 57km from Naha IC to Kyoda IC. Essential for reaching Churaumi Aquarium and northern tourist spots from Naha.
Toll Table by Section
| Section | Standard Car Toll | Distance | Travel Time |
|---|---|---|---|
| Naha IC to Nishihara IC | 210 yen | 6.7km | About 7 min |
| Naha IC to Kitanakagusuku IC | 370 yen | 16.2km | About 15 min |
| Naha IC to Okinawa Minami IC | 520 yen | 23.3km | About 20 min |
| Naha IC to Ishikawa IC | 730 yen | 33.3km | About 30 min |
| Naha IC to Kin IC | 840 yen | 39.5km | About 35 min |
| Naha IC to Kyoda IC (end) | 1,020 yen | 57.3km | About 50 min |
Important notes:
- There are no gas stations on the expressway. Always fill up before entering
- ETC cards are convenient but check if your rental car has an ETC reader. Without ETC, use the cash lane
- Speed limit is 80km/h — lower than mainland expressways (100-120km/h)
- Watch for congestion heading toward Naha during rush hours (7:00-9:00, 17:00-19:00)
Hotel Parking by Area
Naha city hotels: Paid parking at 1,000-2,000 yen per night is standard. Always confirm parking availability and cost when booking. Many operate first-come-first-served; if full, you'll need a nearby coin parking lot.
Resort hotels (Onna, Nago, etc.): Most offer free parking. Large resorts have lots for 500-1,000+ vehicles.
Business hotels: Naha city business hotels charge 500-1,500 yen per night; rural areas are often free.
Beach Parking — Mostly Free with Exceptions
Most beaches in Okinawa have free parking, but a few popular beaches charge fees.
- Free: Araha Beach, Sunset Beach (American Village), Naminoue Beach, Emerald Beach (Ocean Expo Park), Nirai Beach
- Paid: Manza Beach (paid for non-guests), Busena Beach (included in facility fee)
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Illegal Parking — Strict Enforcement in Naha
Parking enforcement in Okinawa, especially Naha, is surprisingly strict. Since Japan's 2006 revised traffic law, civilian enforcement officers actively ticket illegally parked cars.
- Fine: 15,000 yen for standard vehicles
- Hot zones: Kokusai Street, Naha Shintoshin (Omoromachi), and along Route 58
- "Just a minute" is not okay: You can get a ticket even while popping into a convenience store for 5 minutes
- For rental cars, fines are billed through the rental company with possible additional processing fees
MapCode — Essential for Okinawa Car Navigation
When setting destinations on your rental car's GPS, using MapCode is far more reliable than typing addresses. MapCode divides all of Japan into a grid of approximately 30m x 24m blocks, each assigned a unique 6-10 digit number.
How to use MapCode:
- Select "MapCode" input on the car nav menu
- Enter the number and search
- Confirm the location on the map and set as destination
MapCodes for major spots:
| Tourist Spot | MapCode |
|---|---|
| Churaumi Aquarium | 553 075 797 |
| Shuri Castle | 33 161 526 |
| Manzamo | 206 312 039 |
| Kokusai Street (center) | 33 157 411 |
| American Village | 33 526 450 |
| Kouri Bridge | 485 692 174 |
| Nirai Kanai Bridge | 232 594 503 |
| Sefa Utaki | 232 594 503 |
Money-Saving Tips Summary
- Use self-service stations — 5-10 yen per liter cheaper than full-service
- Most parking is free — Churaumi Aquarium, American Village, and Shuri Castle all offer free parking
- Use the monorail for Kokusai Street — Skip the parking hassle and cost by riding the Yui Rail for Naha sightseeing
- Check ETC discounts on the expressway — Late-night discount (midnight to 4 AM, 30% off) can save money
- Use the gogo.gs app to find the cheapest gas station nearby
- Pay by credit card — Most self-service stations accept international cards (Visa, Mastercard), so no currency exchange needed
Frequently Asked Questions
Q. What happens if I don't return the rental car with a full tank?
A. The rental company will charge you at their own rate, typically 30-50 yen per liter above market price. Always fill up yourself before returning — it's significantly cheaper. Keep your fuel receipt as proof to avoid disputes.
Q. What if I can't read the self-service pump interface?
A. Many newer self-service stations offer multilingual touch panels (Japanese, English, Chinese, Korean). Even without multilingual support, just select the red nozzle (Regular) and press the Mantan (Full Tank) button. If stuck, press the intercom button to call staff for help.
Q. What if I don't have cash for coin parking?
A. A growing number of Okinawa coin parking lots accept credit cards and e-money (Suica, PASMO). However, over half still accept only cash, so always keep 100-yen coins and 1,000-yen bills handy.
Q. Are there rest areas on the Okinawa Expressway?
A. The Okinawa Expressway has Nakagusuku PA and Igei SA with restrooms, vending machines, and small shops. However, there are no gas stations. Always fuel up on regular roads before entering the expressway.