Engine Bay Clean — JMC Valeters
Engine Bay Clean

Factory-finish
under the bonnet.

Professional steam-based engine bay clean. Removes dust, dirt and grime from visible engine components. Top-only or full with undercarriage rinse — both available.

Small
£60
Large
£60
XL
£60
Book Engine Bay Clean
★★★★★ 4.8 from 322 reviews Fully insured · 8am–5pm · 7 days
What it is

Factory-finish explained.

An Engine Bay Clean uses safe steam and detailing products to lift dust, dirt and light grime from your engine bay — the visible components, the underside of the bonnet, and (if booked) the undercarriage.

It's done with no high-pressure water near electronics, no harsh chemicals, and no shortcuts. The result: a factory-finish look under the bonnet that makes your car instantly more saleable, and easier to inspect for fluid leaks or wear.

Two versions: top only (£60, 45 mins) covers the engine bay and bonnet underside. With undercarriage rinse (£85, 1hr 15) adds a flush of the underside to remove road grime, salt and winter deposits.

What's Included

Every engine bay clean covers.

Steam-safe, electronics-safe, factory-finish. Pre-sale prep, MOT prep, or just because you want it clean.

Steam-based cleaning (electronics-safe)
Engine cover & visible components
Underside of bonnet wiped down
Plastics & trim dressed
No high-pressure water near electrics
Light grime & dust fully removed
Undercarriage rinse (with upgrade)
Salt & winter deposits flushed (with upgrade)
How We Do It

Five steps. Electronics-safe.

Steam-based, no high-pressure water near sensitive components. Top-only or with undercarriage rinse.

01

Pre-cool & inspection

Engine must be cool. We inspect for any exposed sensors, intake openings, or vulnerable components, and mask anything sensitive.

02

Steam clean — top-only

Hot vapour steam at 110°C breaks down grease, oil residue, and road grime safely without flooding electronics.

03

Soft brush detail

Soft brushes work into crevices, on hose surfaces, and around the rocker covers. No abrasive contact.

04

Undercarriage rinse (optional)

Add £25 — controlled rinse of the undercarriage. Removes road salt, mud, and grime to prevent corrosion.

05

Dressing & finish

Engine bay plastics dressed with non-greasy protective dressing. Restores black trim, prevents UV fade.

Pricing

Three sizes, one promise.

All-inclusive. No travel charge within Greater London. Small surcharge may apply for surrounding counties — confirmed before booking.

Small Car
£60
45 mins · top only
Large Car
£60
45 mins · top only
Extra Large
£60
1.25 hrs · with undercarriage
★★★★★

"Booked engine bay clean before selling my BMW. Joe did a brilliant job — bay looks factory fresh, dealer commented on it. Worth every penny for the resale boost."

Verified Customer · Pre-sale prep · BMW
Common Questions

Engine Bay Clean FAQs.

Is steam cleaning safe for my engine?

Yes — when done properly. Steam at the right pressure and temperature lifts grime without forcing water into electronics or sensitive areas. We use professional steam equipment, not high-pressure jets, and we know which areas to avoid.

Why not just pressure-wash it?

High-pressure water can force moisture into electrical connectors, sensors, and ECU components. Modern engines have a lot of vulnerable electronics. Steam cleans without that risk — same finish, none of the damage.

What's the difference between top-only and undercarriage?

Top-only (£60) is engine bay + bonnet underside, 45 minutes. Undercarriage upgrade (£85) adds a rinse of the underside of the car — useful in winter when road salt builds up, or before an MOT. The upgrade takes the total to about 1 hour 15.

Will this help me sell my car?

Yes, significantly. A clean engine bay signals a well-maintained car. Buyers and dealers expect it. It can add £100–£500 to perceived value on a private sale, especially on premium vehicles.

Can you do this on classics or supercars?

Yes — we're comfortable with classic, supercar and modified engine bays. Mention what you have when booking and we'll bring the right products. We're extra careful around carbs, exposed electronics, and rare/sensitive components.

Do I need to warm or cool the engine first?

Engine should be cool — please run it cold or at least lukewarm before we arrive. Hot engines can cause some products to flash off too fast, and we don't want to risk thermal shock on hot components.

What's your cancellation policy?

Free cancellation more than 24 hours before. Inside 24 hours, late cancellations are non-refundable.

Is this safe for modern cars with lots of electronics?

Yes. We use steam, not high-pressure water. We mask sensitive components first. We've cleaned engine bays on Teslas, BMWs, Audis, supercars — never an issue.

How long does it take?

Top-only takes around 45 minutes. Add the undercarriage rinse and it's around 1 hour 15 minutes total.

Will it pass an MOT or be ready for sale?

Yes — a clean engine bay is an MOT plus and can add real perceived value at sale. Many of our customers book this before listing their car for sale.

Do I need to drive my car to dry the engine afterwards?

No need. Steam cleaning means there's minimal water, and what there is dries within minutes. You can drive normally straight after.

Book Now

Ready to book?

Pick a slot online, or message us on WhatsApp if you'd like a quick chat first. We aim to reply within 10 minutes during opening hours.

Book Engine Bay Clean — From £60
Book Engine Bay Clean — From £60