BMW Z4
★4.7· 50Automatic2.0 L258 hpRear-wheel2 seats
฿10,000per day
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Convertibles car rental in Koh Samui
If you need a convertible car rental in Koh Samui, we have 2 open-top models ready to book — the Mercedes-Benz E-Class Cabriolet from ฿8,500 per day and the BMW Z4 from ฿10,000 per day. Both come with automatic transmission, petrol engines and rear-wheel drive, and we deliver the car to any address on Koh Samui, including Samui International Airport (USM), with the delivery address, date and time agreed with a manager before the booking is fixed.
Which convertibles you can rent in Koh Samui and what they cost
Convertible car rental on this island comes down to two open-top cars on this page. Both are petrol, automatic and rear-wheel drive, and both reach you by delivery rather than from a counter. Below are the models, their seats, engines and daily rates.
Two open-top models available for convertible car rental in Koh Samui
We rent two convertibles here — the Mercedes-Benz E-Class Cabriolet and the BMW Z4. The E-Class Cabriolet carries a 1.8 L engine with 204 hp, seats four and costs ฿8,500 per day. The BMW Z4 runs a 2.0 L unit with 258 hp, seats two and costs ฿10,000 per day. Both are rear-wheel drive with automatic transmission and run on petrol, so the choice comes down to seats and power, not to gearbox or fuel.
Daily rates for each convertible on the island
The E-Class Cabriolet starts at ฿8,500 per day and the BMW Z4 at ฿10,000 per day. VAT 7% is already included in the prices shown, so the daily figure is what you compare, not a pre-tax number.
| Model | Seats | Engine | Transmission | Price per day |
|---|---|---|---|---|
| Mercedes-Benz E-Class Cabriolet | 4 | 1.8 L, 204 hp | Automatic | ฿8,500 |
| BMW Z4 | 2 | 2.0 L, 258 hp | Automatic | ฿10,000 |
What a week of convertible car rental costs
A week of convertible car rental starts at ฿51,000, which is the daily rate multiplied by six. Stretch the booking to a month and the same car starts at ฿178,500, or the daily rate multiplied by twenty-one. The longer rate only works out cheaper per day if you actually keep the car for the full period, so match the booking length to your stay before choosing weekly over daily.
Convertibles car rental in Koh Samui, E-Class Cabriolet vs BMW Z4
Both convertibles we rent on this page are open-top, automatic and rear-wheel drive, so the decision comes down to three things: how many seats you need, how much power you want, and what you are willing to pay per day. The table below puts the two side by side.
| Model | Seats | Engine | Power | Transmission | Drive | Fuel | Price per day |
|---|---|---|---|---|---|---|---|
| Mercedes-Benz E-Class Cabriolet | 4 | 1.8 L | 204 hp | Automatic | Rear-wheel | Petrol | ฿8,500 |
| BMW Z4 | 2 | 2.0 L | 258 hp | Automatic | Rear-wheel | Petrol | ฿10,000 |
Four seats or two for your convertible car rental in Koh Samui
The E-Class Cabriolet seats four, while the BMW Z4 seats two. The E-Class Cabriolet also has the lower daily rate of the two, which over a week is a meaningful gap.
Power and handling of each convertible on the island
The BMW Z4 has a 2.0 L, 258 hp engine, and the E-Class Cabriolet a 1.8 L, 204 hp engine.
Which convertible suits which trip
- Four people or two couples: the Mercedes-Benz E-Class Cabriolet — four seats, ฿8,500 per day.
- A week or longer: the E-Class Cabriolet, because the lower daily rate scales across the whole booking.
Driving a convertible on Koh Samui roads and in the rain
Open-top driving here is a question of road and weather first, model second. The island's ring road is 51 km of mostly two-lane asphalt, and the wet season rewrites the rules between October and December.
Is it safe to drive a convertible in Koh Samui
The ring road runs 51 km around the island and links Nathon, Lipa Noi, Lamai, Chaweng, Bophut and Maenam, so you never need to leave it to reach a resort. Hazards are local and predictable: potholes, sometimes deep, standing water after rain, oil patches left by refuse trucks, and animals on the road.
Driving a convertible in the Samui wet season
October to December is the wet stretch of the year, and November is the peak at 444.6 mm of rain across 16.5 days. February to April is the dry window, with February at 64.3 mm over 4.3 days. If open-top driving is the point of the trip, aim for February to April and keep a rain jacket in the boot.
The best time of year for convertible car rental in Koh Samui
Samui splits its year in two, and for an open-top car the difference is not temperature but rain.
Rainfall by month and what it means for an open-top car
| Period | Rainfall | Days with rain | What it means for a convertible |
|---|---|---|---|
| February–April | 64.3–115.8 mm | 4.3–6.1 | Driest stretch of the year, roof down most days |
| October | 294.9 mm | 15.8 | Wettest month bar November, roof up for days |
| November | 444.6 mm | 16.5 | Peak of the wet season, standing water on roads |
| December | 263.1 mm | 11.6 | Rain easing, but still unsettled |
Why February to April suits an open-top booking on the island
February brings 64.3 mm of rain across 4.3 wet days, the lowest of any month, and March and April stay close behind at 115.8 mm and 82.9 mm. If your dates sit inside that band, reserve before you fly rather than on arrival.
The wet season and what it changes
- Mid-October to early December: the heaviest rain of the year falls here, with November alone recording 444.6 mm across 16.5 wet days.
- Flooded road sections: standing water collects on low-lying stretches, and the ring road's 51 km are no exception after a long downpour.
- Shorter bookings: one-day hires make more sense than a week when three of those days are washed out.
Documents, licence and deposit for convertible rental in Koh Samui
Thai law applies to every driver here, and the paperwork is the same whether you take a convertible or a hatchback.
What you need to bring
- Home driving licence: a valid licence from your own country.
- International Driving Permit: the 1949 Geneva Convention permit, required alongside your home licence under section 42 bis of the Motor Vehicle Act.
- Bank card: a card in the main driver's name is used for the security hold; the amount is set out in the agreement.
Citizens of ASEAN countries may drive on their national licence without an International Driving Permit. Everyone else needs both documents. Driving without them carries a police fine of ฿500–1,000, and an insurer may refuse a claim after an accident — a detail worth more than the fine itself.
Age, insurance and the deposit
The minimum driver age is 21. Conditions for drivers under 25 and for premium classes are set out in the rental agreement. Compulsory motor insurance, Por Ror Bor, covers injury to third parties and is attached to every registered car in Thailand. First-class insurance covers damage to the vehicle; its terms and the excess are set out in the rental agreement.
A bank card in the main driver's name is used for the security hold, and the amount is set out in the agreement. We do not publish a deposit figure for the Mercedes-Benz E-Class Cabriolet or the BMW Z4, because it depends on the agreement you sign.
The agreement itself
Since 30 December 2025 a car rental agreement in Thailand is a contract controlled by the OCPB. It is written in Thai, and all fees and penalties are disclosed in it. Traffic-camera fines are issued to the car owner — that is, to us — and re-invoiced to the renter.
At Rent-Trip we agree the delivery address, the date and the time with a manager before the booking is fixed.
Convertibles car rental in Koh Samui delivery and handover
We bring the car to you rather than asking you to collect it. Delivery works to any address on the island and to Samui International Airport (USM), and the address, date and time are agreed with a manager before the booking is fixed.
The sequence is short.
What to have ready before the car arrives
- Home driving licence: a foreign visitor drives on a home licence together with an International Driving Permit (1949 Geneva Convention; section 42 bis of the Motor Vehicle Act); visitors from ASEAN member states may drive on the licence issued at home.
- International Driving Permit: the police fine for driving without one is ฿500–1,000, and an insurer may refuse a claim — carry both documents, not just the permit.
- Bank card in the main driver's name: used for the security hold, with the amount set out in the rental agreement.
- Age: the minimum driver age is 21; conditions for younger drivers and for premium classes are set out in the agreement.
Why the roof does not change the booking
Weekly and monthly rates are lower per day than the daily rate — weekly is the daily figure multiplied by six, monthly by twenty-one — so the only real decision before booking is how long you need the car.
One practical note from our side: agree the delivery time for daylight hours if you are arriving on a late flight.
What convertible car rental in Koh Samui costs for a week or a month
Longer bookings on this page are priced by a fixed multiplier, not by a negotiated discount: a week costs the daily rate multiplied by six, and a month costs the daily rate multiplied by twenty-one. That is the same arithmetic for both open-top models, so the gap between the Mercedes-Benz E-Class Cabriolet and the BMW Z4 stays proportional however long you keep the car.
Weekly and monthly rates for each convertible
| Model | Per day | Per week (daily x 6) | Per month (daily x 21) |
|---|---|---|---|
| Mercedes-Benz E-Class Cabriolet | ฿8,500 | ฿51,000 | ฿178,500 |
| BMW Z4 | ฿10,000 | ฿60,000 | ฿210,000 |
The E-Class Cabriolet at ฿8,500 a day comes to ฿51,000 for a week and ฿178,500 for a month. The BMW Z4 at ฿10,000 a day works out at ฿60,000 weekly and ฿210,000 monthly. VAT 7% is already inside every figure in that table, so the number you read is the number you compare — there is no separate tax line to add on top, and no lower starting price hidden behind a pre-tax rate.
Matching the booking length to your stay
- Weekly rate: the daily figure multiplied by six — it only undercuts seven separate days if you genuinely keep the car for the whole period.
- Monthly rate: the daily figure multiplied by twenty-one, which suits a stay of close to a month: three weeks at the weekly rate cost only eighteen daily rates.
- Shorter trips: for four or five days the weekly rate is simply more car-time than you need, so daily is the honest comparison.
The mistake is booking a week to chase the lower per-day figure and then handing the car back on day five. Pick the length first, then the model — the multiplier does the rest, and the rate itself is confirmed by a manager when the booking is agreed.
What is not included in the rate
The security hold on a bank card in the main driver's name is set out in the rental agreement rather than quoted here, and the same goes for any delivery fee, which is agreed when booking. The rest of the conditions on the car are also set out in that agreement — worth reading before you decide between a week and a month, because the longer you hold the car the more those conditions matter.