MG Summer Health Check, £39.99 at Chorley Group
There's a free MG lifestyle gift to take away as well.
Book your MG Summer Health Check Today at Chorley Group MG
The MG Summer Health Check costs £39.99 and takes around an hour. An MG-trained technician will check everything on your MG including; parts of your car that hot weather and long journeys put under most strain, and the price includes a screen wash top-up, an exterior wash, an interior vacuum and a free MG lifestyle gift.
It's available at our Chorley, Burnley and Blackpool branches and you don't need to have bought your MG from us.
What is an MG Summer Health Check?
An MG Summer Health Check is a 30-point visual and diagnostic inspection carried out by MG-trained technicians, It covers the components that hot weather and long-distance summer driving put under strain: the cooling system, air conditioning, 12V battery, tyres, brakes and wiper blades.
Every check is logged to your MG digital service record. It's carried out by an authorised MG retailer using genuine MG parts, so your 7-year/80,000-mile MG warranty is unaffected.
MG-TRAINED TECHNICIANS
GENUINE MG PARTS
NO OBLIGATION TO HAVE WORK DONE
WON'T AFFECT YOUR 7-YEAR WARRANTY
What's included in your £39.99 Summer Health Check
Thirty checks across four areas of the car. Your technician works through all of them and records the result of each.
Under the bonnet
| Tyres, wheels and brakes
|
Cooling and air conditioning
| Lights, glass, visibility & cabin
|
Also included in the £39.99: a screen wash top-up, an exterior wash, an interior footwell vacuum and a complimentary MG lifestyle gift of your choice, while stocks last.
Get a FREE gift when you book your Summer Health Check
Choose from over 20 free gifts including t-shirts, umbrellas, travel bags, blankets, mugs just to name a few:
MG100 Sunglasses
Lightweight frames shaped to sit comfortably for hours rather than minutes. The polarised lenses cut glare and block UV, which makes them as useful behind the wheel as they are on the beach.
MG Thermal Flask 350ml
A 350ml flask with a wood-effect cup lid. Keeps coffee hot on an early start and water cold on a long one. Available in black or white.
MG Sports Bottle
A refillable bottle that stands up to the gym bag, a walk up Rivington Pike or a fortnight in the cup holder. Practical, hard-wearing and available in a range of colours.
MG Sports Baseball Cap
A lightweight cap with the MG logo embroidered in white, an adjustable back strap and a metal MG clasp. Available in a range of colours.
Which MGs is this for?
Any MG, whatever its age and wherever it came from. You don't need to have bought the car from us and it doesn't need to be under warranty.
MG3 MG3 Hybrid+ MG4 EV MG4 XPower MG4 Urban MGS5 EV MGS6 EV MG ZS MG ZS Hybrid+ MG HS MG HS Hybrid+ MG HS PHEV. MG Cyberster. MG IM5 MG IM6. MG S9 Phev
Three reasons to book sooner rather than later
Towing this summer
Extra weight puts extra heat through the cooling system, the brakes and the clutch. Tyre pressures usually need raising for a loaded car, and it's the step most people skip.
Roof box or bikes
A loaded roof changes how the car handles and brakes, and roof bars put strain on rails and seals that sit unused for most of the year.
Driving abroad
Tyre rules vary between countries, breakdown cover works differently and recovery is a much bigger job. Better to have the report in hand before you board the ferry.
What happens on the day
Everything you need to know about what will happen on the day of your MG summer health check.
Learn more about MG Aftersales at Chorley Group
Why get a Summer Health Check on your car?
Most drivers think of breakdowns as a winter problem. Flat batteries on a frosty morning, that sort of thing. The breakdown figures say something different.
20%
Rise in RAC breakdowns during the June 2026 heatwave, compared with a normal late-June day. Source: RAC
The RAC's patrols name the 12V battery as the single biggest cause of summer breakdowns, ahead of the cooling system that most drivers would blame. Heat speeds up the chemical wear inside a battery, and summer driving adds to the load: stop-start traffic, phones charging, sat-nav running and the air conditioning on full. A battery that got through spring without complaint will often give up in a queue on the A59.
Summer driving is different in kind, too. You're covering longer distances at motorway speed in a heavier car, sometimes with a roof box on top or a caravan on the back. Tyres that are perfectly adequate on the school run behave differently at 70mph on hot tarmac with four people and a fortnight's luggage on board.
88%
Of all dangerous MOT failures are caused by brakes and tyres. In a single 12-month period, 2.4 million vehicles failed with at least one dangerous defect. Source: RAC analysis of DVSA data
Tyre condition matters more than most people assume. MIRA testing found that wet braking distance from a tyre worn to 1.6mm can be up to 44% longer than from one at 3mm, which is why the industry recommends replacing at 3mm rather than running down to the legal minimum. Summer storms are part of the problem: a month of baked-on rubber and oil makes for a very slippery road surface once the rain arrives.
The point of all this isn't to worry anyone. Most summer failures give plenty of warning first, provided someone takes the time to look.
Air conditioning tends to get attention only once it stops working, which is almost always during the hottest week of the year.
Air conditioning systems lose a small amount of refrigerant every year, seeping out past the seals and hoses. It happens gradually enough that you don't notice the system weakening from one summer to the next. You just notice, three or four years later, that it's blowing cool air rather than cold. Most manufacturers and refrigerant specialists recommend a regas roughly every two years, and very few drivers have one.
Why does my car air con smell?
That damp, musty smell when you first switch it on is usually bacteria and mould growing on the evaporator behind the dashboard, along with a pollen filter that's long past its best. It isn't dangerous for most people, but it's unpleasant and it can make hay fever worse. It won't clear on its own. An air-con decontamination and a new cabin filter will sort it.
Your Summer Health Check includes an air conditioning performance test. We measure the actual temperature at the vents so you know where you stand, and if it needs a regas or a clean we'll quote for it there and then.
Worth knowing if you drive an MG: most MGs built from 2017 onwards use R1234yf refrigerant rather than the older R134a. It costs considerably more per kilo and needs different equipment, which is why air-con prices vary so widely between garages. It's also why you're better off going somewhere that works on MGs every day.
Most of MG's current range is electric or hybrid: MG4, MGS5 EV, MGS6 EV and Cyberster, plus the ZS Hybrid+, MG3 Hybrid+ and HS PHEV. Hot weather affects these cars differently to a petrol car.
Do electric cars lose range in hot weather?
Yes, though less than in winter. Lithium-ion batteries work best between roughly 20°C and 25°C. In typical UK summer conditions, real-world data suggests EV range drops by around 10–15% once temperatures climb past the mid-thirties. Most of that is down to the air conditioning and the battery's own cooling system both drawing power.
In extreme heat the picture is worse. A What Car? test in southern Spain at 40–44°C recorded range shortfalls of between 29% and 44% across three EVs on sustained motorway driving. UK summers rarely come close to those temperatures, but it's worth bearing in mind if you're driving abroad.
What we check on an MG EV or hybrid
- High-voltage battery state of health and charging behaviour
- Thermal management and battery cooling system operation
- 12V auxiliary battery, still one of the most common reasons an EV won't start
- Charging cable, connector and flap condition
- Regenerative braking performance, plus physical brake condition
- Tyres, since EVs are heavier and wear the inner edges more quickly
- Cabin pre-conditioning function
Frequently asked questions about Summer Health Checks
A summer health check is a seasonal inspection of the parts of a car most affected by hot weather and long-distance driving: the cooling system, air conditioning, battery, tyres, brakes and wipers. At Chorley Group it's a 30-point check by MG-trained technicians. It costs £39.99, takes about an hour and includes a written traffic-light report.
Around 60 minutes. You're welcome to wait, or drop the car off and collect it later the same day.
No. Any MG of any age is welcome, whether you bought it from us or not.
No, it sits alongside them. A service replaces consumables such as oil and filters on a fixed schedule, and an MOT is a legal roadworthiness test. A summer health check is a targeted inspection in between the two, aimed at what hot weather and long journeys put under strain. It has no legal status and it doesn't reset your service interval.
Twice a year works well, once before summer and once before winter, alongside your annual service. If you cover high mileage, tow regularly or the car is more than five years old, more often does no harm.
Roughly every two years. Air-con systems lose a small amount of refrigerant each year through normal seepage, and performance drops off slowly enough that most drivers don't notice until it's blowing warm. Most MGs built from 2017 onwards use R1234yf refrigerant.
Yes. Heat is one of the main stresses on a lithium-ion battery, EVs are heavier and wear their tyres differently, brake discs can corrode through underuse, and a flat 12V auxiliary battery is one of the most common reasons an EV won't start. Our check covers all of these.