At renewal season many people use a single criterion: the cheapest premium wins. Then they discover the truth when the car goes in for repair — what is cheap to buy can be expensive to fix. This article shifts the thinking from "premium per year" to "total cost when something happens", which is the figure your wallet actually meets.
The correct equation: real cost = premium + what you pay at claim time
A premium is only ever reduced by moving cost to the moment of the accident, through three main channels: a class of cover that covers less, repair conditions that are cheaper, and an excess you carry yourself. There is nothing wrong with moving cost, as long as you do it knowingly. The problem comes from choosing on the premium figure alone without knowing how much the other side of the equation has grown.
Channel 1: the class of cover — you are covered for what you pay for
From most to least: class 1 covers your own car even with no third party involved; class 2+ and 3+ cover your car only in a collision with another vehicle; class 3 covers the other party only. A practical way to choose: look at the value of the car and your ability to absorb damage yourself. For a new, valuable car, or one still on finance, class 1 makes sense. For an older car with little value left, dropping to 2+ or 3+ and keeping the premium difference as your own repair fund may work out better. What you must not forget: third-party cover matters most, because that liability has no ceiling. Never choose a plan that cuts it back in exchange for a cheaper premium.
Channel 2: dealer repair versus garage repair — the difference that shows up at claim time
Dealer repair costs a higher premium than garage repair, because dealer labour and parts cost more. The question is what you actually need. For a new car within its warranty, dealer repair preserves the warranty terms and the resale value. For a car past that point, a standard garage in the insurer's network is enough for many people. A tip: before choosing garage repair, ask to see the actual list of network garages near you. Is the network dense? What are the reviews like? Terms that look good on paper mean little if the nearest garage is fifty kilometres away.
Channel 3: the excess — a double-edged tool that pays when used well
Carrying an excess — a few thousand baht per claim — buys a clearly lower premium. It suits careful drivers who claim rarely and hold cash reserves. It is the same logic as the deductible on health insurance we have written about. It does not suit heavy city driving with frequent minor scrapes, because paying the excess so often consumes the discount. The calculation is simple: compare the annual premium saving against the excess multiplied by the number of claims you expect in a year. Whichever side is larger gives you the answer.
A checklist before this year's renewal
- What is the car worth now — is the class you hold still sensible?
- How many claims did you make last year? With a good record, ask about a no-claims discount or consider taking an excess.
- Do the repair terms match the age of your car and the garage or dealer you can actually reach?
- Third-party cover has not been cut back.
- Compare at least two insurers on identical terms line by line, not on the price line alone [check the latest information].
In short
Good motor insurance is neither the cheapest premium nor the widest cover. It is the set of terms with the lowest total cost — premium plus what you pay at claim time — for the way you actually use your car. Work through the whole equation before signing and this year will bring no regrets at claim time. If you have several quotes and they are blurring together, send them over on LINE and we will compare them line by line.
This article was inspired by material from the Thai Financial Planners Association (TFPA) and has been entirely rewritten.