The Pre-Purchase Inspection Checklist for a Used McLaren: The Five Things That Separate a £130k Bargain From a £40k Bill

A used McLaren 570S is one of the few supercars where the asking price tells you almost nothing about what you’re about to spend. Going into 2026, clean, low-mileage cars still trade around the £130k mark, while cheaper examples can turn into £40,000 paperweights the moment a carbon tub crack is found. The gap between those two outcomes isn’t luck: it’s the inspection you do, or don’t do, before the money moves. Autocar’s reliability assessment of the 2015–2019 570S is the honest place to start, and it isn’t flattering: this is a car that rewards forensic buyers and punishes hopeful ones.

So here is what I’d actually have a specialist check, in order of how much it can hurt you. Get these five right and a 570S is a genuinely brilliant thing to own. Get one wrong and the saving you thought you’d found evaporates in a single invoice.

1. The engine block: the £30k question hiding in early cars (Pre-Purchase Inspection)

This is the one that keeps me up at night on early examples. The 3.8-litre twin-turbo V8 in the first 570S cars is well documented for porous engine blocks and head-gasket trouble, a pattern Autocar’s reliability verdict flags, and when it goes properly wrong you’re not looking at a repair, you’re looking at a full rebuild. Independent McLaren specialists quote £25,000–£30,000 plus VAT for that work. On a car you bought for the price of a nice flat deposit, that is catastrophic.

The single most valuable fact a buyer can hold is this: McLaren introduced a revised engine block in 2020, and cars without that revised part are widely reported as more likely to need the rebuild. So my first question to any seller isn’t about colour or spec, it’s whether the block has been updated. If it hasn’t, that’s not a deal-breaker, but it is a number you negotiate hard against, because you’re carrying the risk yourself. Ask for evidence. “I think it was done” is worth nothing.

2. The hydraulic suspension: quietly one of the priciest faults

The ProActive Chassis Control set-up, including the hydraulic suspension and lift system, is part of what makes the 570S feel so uncannily composed on a bad British B-road. It’s also a known leak point, and the repair bill is brutal: specialist quotes put a dealer repair north of £12,000 plus VAT, while a good independent specialist using genuine parts comes in closer to £7,000 plus VAT.

What I’d want on the inspection is simple and physical. Does the nose lift cleanly and hold? Are there weeps or damp patches around the dampers and lines? Does the ride change character once the car is properly warm? A car already showing symptoms is a car where someone is hoping you won’t notice. The £5,000 swing between dealer and independent pricing is worth knowing in advance too: it changes how you frame the negotiation.

3. The SSG gearbox: and why service history is the real MOT

McLaren’s seven-speed SSG dual-clutch gearbox is sharp and lovely when healthy. When it isn’t, and the cars most at risk are the ones with patchy, gappy service history, specialist replacement quotes run to £32,000 plus VAT. That’s a second car. That’s the entire “bargain” gone and then some.

This is where I get fussy about paperwork, because the failure pattern tracks neglect. I want a continuous, stamped, specialist-backed history, not a folder with convenient holes in it. It’s also why the warranty maths matters: McLaren’s extended warranty is reported at around £4,500 per year as of 2024 (indicative, and worth confirming for the specific car), and set against a potential £32k gearbox or £30k engine, a year or two of cover stops looking like an expense and starts looking like the cheapest insurance you’ll buy on a car like this.

4. Carbon-ceramic brakes: measured, not glanced at

The carbon-ceramic brakes are spectacular and they last a long time, but “a long time” is not “forever,” and replacement is eye-watering: specialist quotes put it around £18,000 plus VAT at a McLaren dealer, or about £11,000 plus VAT at an independent using OEM parts. A worn set isn’t a maintenance item you shrug at; it’s a five-figure liability you inherit on completion.

The mistake amateurs make is eyeballing the discs and pronouncing them “fine.” A proper pre-purchase inspection measures disc thickness against McLaren’s minimum specification. Within tolerance, brilliant. Near the limit, that’s a number that comes straight off your offer, because you’re buying the next set whether you planned to or not.

5. The carbon tub: the one that turns £40k into nothing

Everything above is expensive. This one is existential. The 570S is built around a carbon-fibre MonoCell tub, and structural damage to it can render the car uneconomical to repair, with replacement costs reported to exceed £40,000. That is the difference between a supercar and a very pretty write-off.

So the most important skill in the whole inspection is distinguishing cosmetic from structural. A repainted front bumper after a kerb or a stone strike is roughly £2,000 plus VAT: annoying, normal, forget about it. A compromised tub is the end of the conversation. Any 570S with a vague accident note in its history, or panel gaps and paint that don’t add up, gets a specialist structural inspection before I’d let a buyer near it. No exceptions. This is the test that separates the £130k car you’ll love from the £40k bill you’ll never recover.

What I’d do before I’d hand over a penny

The 570S is, to me, still one of the most usable everyday supercars money can buy second-hand, and the used market reflects real demand: the UK used-price picture shows these cars holding genuine, aspirational appeal rather than depreciating into anonymity. But the price you see is the start of the negotiation, not the end of the risk.

If it were my money, I would not buy a 570S without a McLaren-specialist pre-purchase inspection covering all five of these points: block revision status, suspension integrity, gearbox history, measured brake wear, and a structural read of the tub. Skip it to save a few hundred pounds and you are gambling the price of a house extension on hope. The buyer I’d actively stop is the one chasing the cheapest car in the classifieds with thin history and a “drives fine” assurance; on this car, cheap is almost always a deferred bill with someone else’s name crossed out and yours written in. Pay for the inspection, walk away from anything that won’t allow one, and a used McLaren stops being a leap of faith and becomes exactly what it should be: the most thrilling sensible thing you’ll ever buy.