My Cart
Your Shopping Cart is Empty
McLaren 750S Common Problems: Early Notes on the 720S Replacement
Independent McLaren Service — Foreign Automotive × Thorney Motorsport — Kitchener, Ontario
MCLAREN 750S COUPE • SPIDER
McLaren 750S Common Problems: Early Notes on the 720S Replacement
Early notes on the 720S replacement — what changed, what didn't, and what to watch for.
The 750S launched in 2023 as the replacement for the 720S, with the M840T V8 lifted to 740 hp, lighter weight, revised aero, faster steering ratio, and a chassis tune that addressed the 720S's few remaining criticisms. The 750S is too new for a comprehensive used-car failure profile — most cars are still under factory warranty and the long-term wear patterns will not be clear for another two to three years. But we have early observations from the cars that have come through service, and from the production differences relative to the 720S, that are worth sharing.
What changed from the 720S
The 750S inherits most of the 720S architecture but updates several systems that addressed known 720S issues. Specifically:
The folding instrument cluster motor design was revised on the 750S. Early 750S cars do not show the motor failure pattern we saw on 720S cars, though the design life will take another few years to fully validate.
The HVAC blower motor controller module was revised. We have not seen the intermittent blower fault on 750S cars to date.
The active aero actuator design was updated. Lower failure rate so far compared to early 720S cars.
The infotainment platform was updated with software that closes most of the IRIS 2 stability issues we saw on the 720S.
What still applies from the 720S service profile
Hydraulic accumulator pressure loss is universal across the McLaren range and will apply to the 750S in the same five-to-seven-year window. Door strut failure on the dihedral doors follows the same timeline. Door handle motor failures on the pop-out handles follow the same five-to-nine-year window. Battery drain and the need for a tender at all times when parked applies identically. Coolant connector hardening — McLaren has revised the connector design but the 750S is too young for us to know whether the new design has solved the long-term issue.
Early observations specific to the 750S
The 750S is the lightest non-LT McLaren in recent production, and the lighter weight produces slightly different brake wear patterns than the 720S — less heat into the front discs on equivalent driving, slightly higher rear brake bias. We are watching pad wear distribution on customer cars to see whether the published service interval applies as written or whether the front pads will outlast the published interval by a meaningful margin.
The revised steering ratio is faster than the 720S, which makes the car feel sharper but also means small steering inputs at speed translate to more lane movement. This is a setup characteristic, not a fault, but it is worth knowing for owners coming from a 720S.
The new exhaust system on the 750S is more aggressive at part throttle. Customers occasionally report the exhaust note feels louder than they expected — that is intentional, and there is no recall or service item that quiets it.
Service intervals on a 750S
The McLaren annual service framework, 1st through 15th services, with the same parts requirements as the 720S. The 5th service coolant flush, the 6th service fuel filter and charcoal canister, and the 10th and 12th service brake fluid bleed all apply on the same schedule. The 750S is too young to have reached the 6th service interval on any car yet; the earliest cars are now approaching the 2nd or 3rd service window.
What to look for on a used 750S
Most 750S cars on the used market are still within factory warranty. The PPI focus is therefore less about finding mechanical failures and more about verifying that the car has not had undisclosed damage, that the service history is clean, that any open recalls or service campaigns have been completed, and that the diagnostic modules show no stored faults that the owner is unaware of.
A real 750S PPI takes the same four-hour appointment as any other modern McLaren PPI. The mechanical inspection is shorter on a young car. The diagnostic and documentation review is longer.
Where we fit in
The 750S is the current production McLaren Super Series and the car will dominate our service bay for the next several years as the early production cars exit warranty and customers look for independent service. We are the only authorized McLaren independent specialist in Canada outside the dealer network. Our partnership with Thorney Motorsport in the UK gives us their experience with the 750S since launch — they have serviced more 750S cars in 2024 and 2025 than almost any independent shop in Europe.
If you own a 750S or are looking at one, book a McLaren service or PPI appointment. We will service the car the way McLaren intended, using factory-spec parts and the McLaren-specific diagnostic tools that this generation of car requires.
Book Your McLaren In
The only authorized McLaren independent specialist in Canada outside the dealer network.
Service, repair, pre-purchase inspections — to McLaren factory specification, partnered with Thorney Motorsport in the UK. We will tell you what is wrong, what is right, and what we would do if it were our car.
0 comments