Reading Between the Lines: How to Decode a Garage Estimate Before You Say Yes

Most drivers read an estimate from the bottom up: total, VAT, gulp. That is understandable, but it is the wrong end of the page. At Donnelly VRS Ltd we write these documents every day, and the useful information is nearly always in the lines above the total. Read it like a workshop manager and you will not necessarily get the cheapest bill — you will get a clearer one.

Start with the complaint, not the cost

The first line should tell you what the garage is fixing, not just what it is replacing. 'Replace front pads and discs' is a repair. 'Investigate brake noise' is a diagnosis. Both can appear on the same estimate, and they are not the same job. Ask whether diagnostic time is included, because a fault-finding charge that appears later is one of the most common sources of friction. A good estimate links the work to the symptom you described.

Labour: the hours and the rate

Labour is usually shown as a rate per hour plus a number of hours. The rate varies widely across the UK — independent garages, main dealers and mobile mechanics all sit in different places — so do not compare the headline rate without comparing what it includes. Ask whether the job is priced at book time or estimated time. Book time is a standard allowance; estimated time is someone's judgement. Neither is dishonest, but you should know which one you are agreeing to. Also ask whether the estimate includes VAT. A quote that looks £200 cheaper can simply be a pre-VAT figure, and that is not a saving.

Seized bolts, corroded fixings and rounded nuts are the classic unknowns on older cars. A garage cannot always know until it starts. The fair approach is to authorise the main job and set a limit for extra labour, rather than giving open-ended permission. 'Call me if it needs more than an hour's extra work' is a perfectly reasonable instruction.

Parts: genuine, OEM, pattern and reconditioned

The parts line is where value lives. Genuine parts come from the manufacturer's own supply chain. OEM parts are made by the same supplier but sold under a different brand. Pattern parts are made by third-party suppliers to their own specification. Reconditioned parts have been rebuilt. None of these words is automatically good or bad; the right choice depends on the component.

For filters, wipers and many service items, a decent pattern part is fine. For safety-critical items — brakes, steering, suspension, airbags — ask for the brand and the warranty. A cheap brake disc that warps in 8,000 miles is not cheap. A pattern clutch that lasts half as long as a genuine one is not a bargain either. If the estimate lists only 'front discs' with no brand, ask what is going on. You do not need to become a parts expert; you just need to know what you are buying.

Consumables, sublet and the small print

Consumables are the oils, fluids, clips, sealants and workshop supplies that make a repair possible. They are legitimate. What is less helpful is a vague 'consumables' charge with no context, or a 'shop supplies' line that looks like a rounding-up exercise. Ask for an itemised breakdown if the figure is significant.

Sublet work is work the garage sends out — wheel alignment, air-conditioning recharge, paint, machining. It should be listed separately with its own price. A good estimate also states collection and delivery arrangements, courtesy car availability and whether storage charges apply if the car is left after the work is done. These are not petty details; they are part of the bill.

The phrases that deserve a follow-up question

Certain words should make you pause: 'from', 'subject to', 'if required', 'further investigation' and 'plus any additional parts'. They are not necessarily red flags. On an old car, they are often honest. But they mean the number in front of you is not a final number. Ask what the worst-case figure is, what would trigger the extra work, and whether the garage will call before spending beyond the agreed amount.

A fixed price is stronger than an estimate. If the garage can give you a fixed price for a defined job, ask for it in writing. If it cannot, ask why. Sometimes the answer is genuine — hidden corrosion, a seized component, a fault that needs tracing. Sometimes it is simply habit.

MOT advisories are not automatically repairs

An advisory is information, not a command. A slightly worn tyre, a misting shock absorber or a minor oil weep may be worth monitoring rather than replacing immediately. A corroded brake pipe or a cracked suspension spring is different. Ask the garage to rank the advisories: which are safety-critical, which are likely to become failures before the next MOT, and which are cosmetic or long-term. That conversation is more useful than a blanket 'do everything' quote.

What a clear estimate looks like

A well-written estimate should include your registration and mileage, the date, a description of the work, the parts used — ideally with brand or part number — the labour hours and rate, consumables, sublet work, VAT and the total. It should say whether it is an estimate or a fixed price, how long the car will be in, and what warranty applies to the parts and labour. If any of that is missing, ask for it before you authorise the job.

Three questions to ask before you say yes

First: what exactly is being replaced, and why? Second: is this a fixed price or an estimate, and what could make it rise? Third: what happens if you find something else once the car is on the ramp? Those three questions will not turn a complicated repair into a simple one, but they will tell you whether the garage is used to explaining its work. A workshop that welcomes them is usually a workshop worth keeping.

Price matters, but clarity matters more. A cheap estimate that grows is worse than a fair estimate you understood from the start. That is the forecourt version of value.