If you’ve ever tried to book a car service and felt unsure whether to choose interim, full or major – you’re not alone. Many drivers aren’t quite sure what each type includes, how often they’re needed, or what’s best for their vehicle.
But choosing the right service doesn’t have to be complicated. Once you understand what each level involves and how it relates to your car’s age, mileage and driving habits, it becomes a straightforward decision.
At Harewood Garage, we help drivers across Andover choose the right type of service based on real needs – not guesswork. In this guide, we’ll break down the differences and help you work out which service is right for you.
What Is an Interim Service?
An interim service is a basic maintenance check that’s typically recommended every 6 months or 6,000 miles – whichever comes first. It’s ideal for drivers who cover high mileage or want extra peace of mind between annual full services.
It usually includes:
- Oil and oil filter change
- Fluid level checks (brake, coolant, screenwash)
- Tyre pressure and tread inspection
- Brake check
- Lights and wipers inspection
- Visual checks on belts, hoses and suspension
Think of it as a health check to keep everything running smoothly between your main services. It’s especially useful if you do a lot of short trips around Andover or drive regularly for work.
What’s Included in a Full Service?
A full service is a more comprehensive inspection and maintenance routine, usually recommended once a year or every 12,000 miles. It covers everything included in an interim service – plus a range of additional checks and replacements.
Typical full service tasks include:
- Oil and filter change
- Air filter replacement
- Brake fluid and coolant top-up
- Detailed brake inspection
- Steering and suspension checks
- Exhaust system inspection
- Battery condition check
- Fuel filter (diesel) or spark plug replacement (petrol – depending on mileage)
- Full lights, horn and dashboard warning light check
- Windscreen, mirrors and seatbelt condition review
This type of service helps extend the life of your vehicle, reduce the risk of breakdowns, and maintain its fuel efficiency. It’s the best option for most drivers looking to keep their car running reliably and safely throughout the year.
What Makes a Major Service Different?
A major service is the most thorough type of car service – typically recommended every 2 years or 24,000 miles, depending on your vehicle’s make and model. It includes everything from an interim and full service, with the addition of more in-depth checks and less frequent component replacements.
A major service may include:
- Replacement of key filters (air, cabin, fuel)
- Spark plug or glow plug replacement
- Brake fluid replacement
- Gearbox oil and differential checks (if required)
- Comprehensive inspection of the engine, suspension and drivetrain
- Timing belt check or replacement (if applicable)
- Full road test and detailed service report
It’s a smart choice for high-mileage drivers, or anyone wanting a complete reset for their vehicle. At Harewood Garage, we often recommend a major service for cars that haven’t been serviced in a while or are approaching key mileage intervals.
How Often Should You Service Your Car?
How often you should service your car depends on a few key factors – mainly mileage, the age of the vehicle, and your driving habits. As a general rule:
- Interim Service – every 6 months or 6,000 miles
- Full Service – every 12 months or 12,000 miles
- Major Service – every 24 months or 24,000 miles
However, some vehicles have more specific manufacturer guidelines, especially newer models or those under warranty. Your car’s service book (or digital record) will list these intervals.
It’s also worth considering your driving style. Short journeys around Andover, regular stop-start traffic, and long-distance motorway driving can all affect how frequently your vehicle should be serviced.
If you’re unsure, our team at Harewood Garage can check your service history and advise you on exactly what your vehicle needs and when.
Which Service Do You Really Need?
If you’re not sure which service to book, here’s a simple way to decide:
- Just had a full service 6 months ago?
Go for an interim service to stay on top of basic maintenance. - It’s been about a year since your last proper service?
A full service is usually the right choice – it keeps your car in top condition and helps prevent issues. - Not serviced in over 18 months or your car’s done high mileage?
A major service gives your vehicle a deeper check and replaces key parts often overlooked in standard servicing.
Still unsure? That’s what we’re here for. At Harewood Garage, we’ll ask the right questions, check your records, and recommend the service that suits your car – and your budget – without upselling or over-servicing.
Why Choose Harewood Garage for Your Service in Andover
At Harewood Garage, we know that every car – and every driver – is different. That’s why we don’t take a one-size-fits-all approach to servicing. Instead, we focus on honest advice, reliable work, and service packages that suit your needs.
Here’s what sets us apart:
- Clear explanations – we’ll help you choose the right service without confusing jargon
- Transparent pricing – no hidden extras or surprises
- Qualified technicians – experienced, local professionals who treat your car with care
- Convenient location – easy to reach from anywhere in Andover
Whether you drive a city runabout or a family SUV, we’re here to keep your vehicle safe, efficient and road-ready – without any unnecessary extras.
Let Us Help You Choose the Right Service
Not sure whether you need an interim, full, or major service? You’re not alone – and we’re here to help. At Harewood Garage, we’ll take the time to understand your car, your mileage, and your driving habits before recommending the most suitable service for you.
Our goal is simple: keep your vehicle running smoothly without spending more than you need to. With trusted advice, expert technicians and a friendly team, we make car servicing straightforward and stress-free.
Call us on 01264 352 456 or book online today – and let’s get your car the care it needs.