These can all be signs that the oil is no longer providing optimal protection.
Book an oil and filter change
Oil and filter changes at home or work
Our expert AA Mobile Mechanics come to you, just enter your number plate & postcode to get started.

Why book your oil and filter change with The AA?
Our AA Mobile Mechanics can change your oil and filter at your home or work , or we’ll find an AA Approved Garage near you
We can come to you
Transparent, up front pricing
Upfront pricing, and flexible payment options available, including a 0% interest option*
Guaranteed parts
How do I know if my oil or oil filter need replacing?
When your vehicle indicates that oil service is due, when the oil on the dipstick appears gritty or unusually dark, or when the manufacturer's recommended service interval has been reached.

How to book
Share your details
Say when and where
We handle the rest
How often should you change your car's engine oil and filter?
As a general guideline, engine oil and oil filters should be replaced at the intervals recommended by the vehicle manufacturer.
The appropriate interval can vary depending on the car, the type of oil used, and driving conditions.
- Cars that are driven in demanding conditions may require more frequent oil and filter changes.

How can you tell that your engine oil needs replacing?
Your engine oil should be replaced as per the vehicle manufacturer's recommended service schedule, or oil life monitoring system.
However, your oil may also need replacement sooner if it shows signs of contamination, such as grit, sludge, coolant contamination, or an unusually strong odour.

We can do more than you think. Much more
Mobile Mechanics
Expert car servicing, diagnostics & repairs, engineered around your day.
Car servicing
Fault Finder
We’ll diagnose the issue and explain what needs doing next.
Brake disc and pad replacement
MOT
An annual test to ensure your car meets safety and environmental standards.
Because of the equipment required, some repairs and all MOTs do need to take place at our AA Approved Garage
Find your local Mobile Mechanic
Our AA Mobile Mechanics operate throughout the country, with appointment availability from as little as 48 hours.
AA Mobile Mechanics is only available for vehicle diagnostics, servicing and associated repairs in specific locations, and is subject to availability.
The service location must be a private driveway or private land, and the vehicle should be on a flat surface with good access all around. A service can’t be done on a public road (including street parking and other public spaces). You need to obtain all necessary permissions from any occupier of the premises where the car is located before our Mobile Mechanic arrives.
Once a Mobile Mechanic is sent to your location, if the service can’t be done because the vehicle isn’t available or the location isn’t suitable we may charge you the full cost of the appointment.
The AA Mobile Mechanics service is not included as part of AA breakdown cover membership. If you are a member in a breakdown or accident please use the AA app, or you can get help online.
*0% interest installment option details: Payment will be split into 4 equal installments, with the first 25% payable on a debit card. Using this service will mean taking out a credit agreement with Payment Assist. Payment Assist can refuse credit, but the application process is immediate online, with no footprint left on the customers credit record. If the subsequent payments aren’t made on time, Payment Assist do reserve the right to charge a late payment fee.
AA Mobile Mechanics and Approved Garaging Network services are subject to terms and conditions and this privacy policy.Key drop option: Subject to this option being available in your location, you can opt for the Mobile Mechanic to drop off your car keys at the end of the booking to a secure place if you provide us with permission to do this and confirm your chosen secure place. A secure place must be a secure, private/non-communal external lock box or internal letter box at the location of your booking. If you opt for this option, you acknowledge that we will not be responsible for any losses you suffer as a result, except to the extent we cannot exclude liability under law and/or our full terms. Mobile Mechanics full T&Cs apply.