This is the founding principle of this whole site, and it's worth understanding precisely: compulsory motor third-party liability insurance (MTPL) covers damage caused to OTHERS – the law requires every keeper to hold it. Casco covers damage to YOUR OWN car – that's a voluntary choice. The two aren't competitors: they cover two different risks.
- MTPL: compulsory, protects the OTHER, injured party – it never pays out for your own car.
- Casco: voluntary, compensates damage to YOUR OWN car – whether you're at fault or no one is.
- As a blameless victim, the at-fault driver's MTPL pays – but in many situations (hail, theft, an unknown culprit, your own fault) only casco steps in.
The case map: seven typical situations
1) You cause a fender-bender: your MTPL settles the other car, only casco covers your own. 2) Someone damages your car and the culprit is known: their MTPL pays – casco isn't strictly needed, though it can speed things up. 3) Your car is scratched in a car park by an unknown culprit: there's typically no MTPL route – this is casco territory: parking damage. 4) Hail, storm, a falling branch: no at-fault party – natural perils, casco. 5) Theft: casco, subject to key conditions. 6) Wildlife on the road: typically a casco matter: wildlife collision. 7) Windscreen chip: glass damage, casco – often with a more favourable deductible rule.
Why doesn't one replace the other?
MTPL insures liability: the risk that you cause damage to someone else – which is why it's compulsory, and why you can't pick and choose its cover. Casco is asset insurance: it protects the value of your own car. Anyone who keeps only MTPL to "save money" is actually taking on the full risk of their own car – from collision to theft – themselves. That can be a deliberate choice too: who should get casco and who shouldn't – but let it be a choice, not an oversight.
Strongest when handled together
The two policies exist separately but belong to the same car – so it's worth putting them out to competing offers together: one renewal date, one table showing your whole car insurance package clearly. For MTPL policies with a 1 January renewal date, the autumn renewal season is a good prompt: if you're pulling out the paperwork anyway, put casco on the table too – running MTPL and casco together in practice. Our sister site covers MTPL in detail: kotelezo.biz.
Shall we go through your whole car insurance package together – MTPL and casco in one table? book a free 20-minute consultation →
