Basic vs Deep Carbon Clean: Which One Do You Need?
Two services, fifty pounds apart. The difference is simple, and a fair number of customers are better off with the cheaper one — here is how to work out which camp you are in.
The choice between a basic and a deep carbon clean is not about quality. It is about dose. The machine, the gas, the method and the care are identical — the deep clean simply runs for roughly twice as long, which does roughly twice as much work on the deposits. Whether your engine needs that depends on what is in it.
The two services side by side
| Basic Carbon Clean | Deep Carbon Clean | |
|---|---|---|
| Price | £99 | £149 |
| Time on site | Approx. 45–60 min | Approx. 90–120 min |
| Process | Hydrogen, distilled water | Hydrogen, distilled water |
| Anything dismantled? | No | No |
| Call-out fee | None | None |
| Invoice and receipt | Yes | Yes |
| Designed for | Keeping a maintained engine fresh | Clearing accumulated build-up |
Everything except the cycle length is the same. There is no premium gas, no secret extra step, no better technician on the deep clean. We would rather tell you that plainly than let you assume you are being sold two different technologies.
The basic clean is right for you if…
You are running a maintenance routine rather than fixing a backlog. Specifically:
- You had a clean last year, or the year before, and you are keeping it up.
- Your car is under about 60,000 miles and has been reasonably looked after.
- You do a decent proportion of longer runs — a real commute, motorway miles, not just four-mile hops.
- You have no symptoms to speak of and you are doing this preventatively, which is exactly how we think it should be used.
- You are booking it alongside a service as part of the yearly routine.
If that is you, the deep clean would be spending fifty pounds on removing deposits that are not there. We will say so.
The deep clean is right for you if…
You have accumulation to clear, not just upkeep to do:
- It has never been carbon cleaned, and the car is past 60,000 or 70,000 miles.
- You are a diesel driver doing predominantly short, cold, urban journeys.
- You drive a van, a taxi or private hire — idling and short fares build deposits faster than anything.
- You have noticed several of the common symptoms: a lazy throttle, a rougher idle, black haze on acceleration.
- Your MOT emissions figures have been creeping upward year on year.
- You have just bought a used car with patchy history and want to start from a known point.
Rule of thumb: if nobody has ever cleaned it and it has done serious town miles, pay the extra. If you cleaned it last year, don't.
The pattern most people should follow
For a typical North East car — a diesel or a direct-injection petrol, five to ten years old, mixed driving with a fair bit of town work, never carbon cleaned — the sensible sequence is one deep clean to clear the backlog, then a basic clean each year afterwards to stop it building again.
| Year | Service | Why |
|---|---|---|
| Year 1 | Deep clean, £149 | Clearing however many years of accumulation are in there |
| Year 2 | Basic clean, £99 | Twelve months of deposits, not ten years of them |
| Year 3 onward | Basic clean, £99 | Routine upkeep alongside the service |
| If usage changes | Reassess | New job with heavy town mileage? Consider a deep clean again |
That averages out well below the cost of most single line items on a service invoice, and it fits neatly into a yearly maintenance rhythm.
When neither is the answer
Worth saying clearly, because it comes up: if your car has an active mechanical fault, a fully blocked DPF, a persistent warning light with an unread fault code, or is using noticeable oil between services, do not book either service yet. Spend the money on a diagnostic first. Paying £149 for a deep clean on a car that needs a £40 sensor is a bad afternoon for everyone. We would tell you the same on the phone.
How we decide if you are not sure
Put the details on the booking request form — make, engine, fuel, mileage, typical journey length, anything you have noticed, and whether it has ever been cleaned. We will come back with a recommendation and the reasoning, not just a price. Sometimes that recommendation is the deep clean. Reasonably often it is the basic. Occasionally it is "get it looked at first, come back to us after".
Whichever you book is what you pay. We do not turn up and revise the quote upward on your driveway. If the engine turns out to be dirtier than expected we will tell you at handover so you can factor it into next year's booking, and that is where the conversation ends.
The short version
Backlog to clear: deep clean. Routine to keep: basic clean. Active fault: neither, yet. If you are genuinely on the fence between the two and the car has done more than 70,000 miles, take the deep clean once and drop to basic afterwards — that is the choice we would make on our own cars. Full detail on both is on the pricing page, and what we do on the day is set out in what actually happens during a mobile carbon clean.
Frequently asked
What is the actual difference between a basic and a deep carbon clean?
The length of the cleaning cycle. The basic clean at £99 runs approximately 45 to 60 minutes on site, the deep clean at £149 runs approximately 90 to 120 minutes. Same machine, same hydrogen process, same engine — the deep clean simply spends far longer working on the deposits.
Will you upsell me to the deep clean when you arrive?
No. We agree the service when you book and that is what you pay. If we think on the day that your engine would have benefited from the longer cycle, we will tell you so you can consider it next year — not change the price on your driveway.
If I have a deep clean once, can I drop to the basic afterwards?
Yes, and for most cars that is exactly the right pattern. One deep clean to clear years of accumulation, then a basic clean each year alongside the service to keep on top of it.
Is two basic cleans better than one deep clean?
For a heavily loaded engine, no — the deep clean's uninterrupted longer cycle does more in one go than two shorter ones months apart. For ordinary yearly maintenance, one basic clean a year is plenty and two would be a waste of your money.
Want this done without leaving the house?
We are fully mobile across the whole North East — Newcastle to Middlesbrough, coast to the Tyne Valley. Basic carbon clean £99, deep clean £149, no call-out fee, invoice and receipt every time.