
You can get your car's engine steam cleaned at a professional auto detailing shop, some car dealership service centers, and certain quick-lube or car wash locations. For a DIY approach, you can rent a steam cleaner or use a dedicated engine degreaser with a garden hose, but this requires caution.
A professional engine steam cleaning, often called an engine bay detail, uses high-temperature, low-moisture steam to dissolve grease and grime without drenching sensitive components. This service typically costs between $75 and $150, depending on the vehicle size and the engine's condition. It's a popular service offered by mobile auto detailers who come to you, as well as established brick-and-mortar shops specializing in high-end detailing.
Before any cleaning, a reputable technician will always cover sensitive areas like the alternator, ignition coils, and exposed air intake with plastic bags or waterproof coverings to prevent electrical issues. The high heat of the steam not only lifts dirt effectively but also helps to sanitize the area. After steaming and agitating with brushes, the engine is rinsed with low-pressure water and often dressed with a protectant to give hoses and plastics a like-new appearance.
While a clean engine bay makes spotting leaks easier and can boost resale value, it's not a frequent necessity. For most owners, having it done once a year or before selling the car is sufficient. If you choose the DIY route, ensure the engine is completely cool and you avoid directing high-pressure water at electronic components.
| Service Provider Type | Average Cost | Key Consideration | Best For |
|---|---|---|---|
| Mobile Auto Detailer | $80 - $160 | Convenience, comes to you. | Busy individuals, multi-car families. |
| Brick-and-Mortar Detail Shop | $75 - $150 | Often higher-end equipment/expertise. | Enthusiasts seeking top-tier results. |
| Car Dealership Service Dept. | $100 - $200 | May be offered with other services. | Owners who prefer dealer servicing. |
| DIY with Rental Steam Cleaner | $30 - $60 (rental + supplies) | Requires time, effort, and caution. | Budget-conscious, hands-on owners. |
| Self-Service Car Wash Bay | $10 - $20 (in coins/tokens) | Use degreaser spray; high risk of water intrusion. | Quick, superficial clean (not recommended). |

I just had mine done last week! I found a guy on Yelp with great reviews—a mobile detailer. He showed up at my house with his van, took about an hour, and the engine looked brand new. Cost me a hundred bucks. Way easier than trying to do it myself and messing something up. Just search for "mobile auto detailing" in your area and check their photos.

Be very careful with this. That "steam" is often just hot, high-pressure water. If you get it in the wrong spot, you can cause thousands in electrical damage. If you're not having issues, sometimes it's best to just wipe it down with a damp rag. If you must clean it, a professional detailer who knows how to properly cover the alternator and fuse box is the only safe bet.


