Sonia Cabral★★★★★
Jaysen did an incredible job on my car’s ceramic coating. The results blew me away, my car looks brand new. The shine is unreal, and all the scratches are completely gone.
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Mobile detailing across LA and Orange County
Signal Hill Mobile Car Detailing & Ceramic Coating
Car Care Made Simple.
120+reviews on Google and Yelp 
★★★★★
★★★★★Open now9 AM to 5 PM dailyReplies in under 6 hours
Signal Hill
Why does the dust come back the same day?
You rinse the car in the driveway off Panorama Drive, walk inside, and by evening there is a fine grey film across the hood again. Park anywhere near the working wells on Willow and it lands faster than that.
Hill air carries more than dust. Oil-field grit is heavier and sharper than ordinary road dust, and it settles on a flat panel and stays there. A car parked outside on Hilltop or up on Skyline takes a fresh layer every night, and nobody mentions that when you buy the car.
Wiping it off is the worst thing you can do. Dragging a dry towel across that grit is how most of the swirl marks on your hood got there, and a tunnel brush down on Cherry does the same job faster.
So we lift it instead of pushing it. Foam and a proper hand wash float the grit off before anything touches the paint, then we pull out what has bonded to the clear coat, then we leave a slick surface behind so the next layer rinses off instead of sticking.
Detail Designer
Spec your detail
Answer a few quick questions about your car and we will match you to the right service, with a real price and only the add-ons that actually apply. It takes about a minute.
Cars that live on the hill
What it looks like once the grit is off
Cars that park on the hill spend every night under a fine layer of grit. This is what the paint looks like once it comes off properly.
Proof
120+ reviews across Google and Yelp
A few of the 120, starting with the ones from around the hill.
Shauna Reed★★★★★
I was long overdue for a thorough wash and detail. Jaycen did his thing! Made my 2012 car look shiny and new, both inside and out.
Omar Delgado★★★★★
You should definitely book an appointment! I got the clay and seal package, and the outside looked amazing. They did a great job on the inside too. Everything was perfect. They really took their time to make sure everything looked brand new.
Jose Lora★★★★★
Jaycen was amazing — very polite, professional, and knowledgeable. My brand new Tesla Model 3 is looking gorgeous after a seven-year ceramic coating done by him. I will recommend this young man 100%. Very, very high work ethic.
Daphne W.★★★★★
Would highly recommend Automotive Aptitude for anyone looking to get an amazing job done on their car! They were super professional, nice and did an amazing job with my car. I opted in for interior detailing and they did such a good job.
Johnny Bitcoin★★★★★
Jaycen came by, and took my Nissan 350z to another level, his attention to detail, knowledgeable advise and maintenance suggestions have made peoples heads turn when they see it…
Ashley Crisostomo★★★★★
Not going to lie, I had the dirtiest car due to being a college student! Jaycen made my 2014 Honda Civic look brand new. He impressed me so much that I had to get my Acura RDX ceramic coated by him. BOTH cars look amazing.
Vannear Por★★★★★
I have had Jaycen detail my car twice now and he has done an amazing job each time. Very convenient, excellent service, and he will take care of your car.
Nina C★★★★★
I am celebrating a year as Jaycen’s repeat customer. I trust him with my 5 year old white VW Tiguan which I take pride in looking sharp. He is responsive, polite, and professional.
Adam P.★★★★★
Professional, amazing service, and great prices. You can’t ask for much when you need a last minute appointment right before a road trip, but Jaycen was able to squeeze me in and knock it out of the park.
Gina Chea★★★★★
Jaycen did an amazing job detailing my car! I work night shifts, so finding the time and energy to clean my car is very hard. He drove to my house and washed, detailed, and added a ceramic coating all while I was sleeping.
Emiliano Alcantar★★★★★
I had just gotten a fresh paint job on my truck and took it to Jaycen for a detail, and I was honestly blown away by the results. He cleaned my truck up insanely nice inside and out.
J. Smith★★★★★
Had my Tesla detailed by Automotive Aptitude, and they killed it with the detail and ceramic clear coat — my car has that brand new feel.
Royce Stanfill★★★★★
Jaycen is quick in his response. He showed up on time, brought everything he needed, and he was hard at work.
Pick what my car needs
Set the size and the numbers below change. Sedan covers most cars. SUV covers crossovers and mid size SUVs. Truck covers pickups, vans and big SUVs.
GOOD · Start here
Standard Detail
The entry level detail. An inside and out reset, and the simplest way to find out what we do.
What is included
- Hand wash plus wheels and tires for a fresh exterior clean
- Interior wipe down covering dash, console and door panels
- Vacuum and basic cleaning so floors and seats come back fresh
Does not include clay bar, paint protection or stain extraction.
$1501.5 to 2 hours
BETTER · ★ Most Popular
Clay N’ Seal
Run your hand over your hood. Feel that grit? That is dirt stuck in the paint, and soap will not take it out. We pull it out and seal the paint back up. Your car will feel like glass.
What is included
- Hand wash to start clean
- Clay bar decontamination that lifts what a wash cannot remove
- Durable synthetic sealant for gloss and months of protection
- Light vacuum and interior wipe down to refresh the cabin
Does not include interior stain removal, leather conditioning or ceramic protection.
$1802 to 3 hours
Deepest gloss
Paint Correction
Swirls, scratches and haze polished out for a corrected, mirror finish.
What’s included
- Paint depth measured before any pad touches the car
- Test spot to find the safest, most effective combination
- Swirls, wash marks and oxidation polished out
- A deep, corrected gloss that lasts
From $6005+ hours
Meet the owner
The person who shows up
I am Jaycen. I run Automotive Aptitude out of Cerritos, about fifteen minutes from the hill, and after four years and over a thousand cars I still do the work myself.
Signal Hill is small enough that I know the streets. I also know what the wells and the traffic on Cherry do to a finish, and I would rather explain what is actually happening to your paint than sell you a package you do not need.
I am insured and happy to show the certificate. At the end we walk the car together and you tell me if anything is off before I load up.
Real person, real reply. Texts usually answered in under six hours, evenings included.
The math
The hill tax, in numbers
Living on the hill means the paint takes grit every single night. You can pay for that in swirl repairs every couple of years, or once in protection that makes the grit rinse off instead of grind in.
The one-year coating is $800. The seven-year is $1,600 and works out to about $19 a month. Kept nice once beats fixed twice, and the longest option is the cheapest one to own.
Every coating includes fixing the paint first, because a coating locks in whatever is under it.
How it works
Three steps, and the car stays where it is parked
01
Send me the details
- Call or text and tell me what the car has been through.
- Oil-field grit, sprinklers or a tunnel wash gone wrong all change what I recommend.
- You get a straight answer back, usually the same day.
02
The van comes to you
- The van brings its own water, power and lighting.
- Sloped driveway, carport or a space at the curb, we work with what the hill gives us.
- Insured, and I will show you the certificate before I start.
03
We look at it together
- We walk the car together before I pack up.
- You see the finish in daylight before you pay anything.
- Most cars up here end up on a maintenance schedule after the first visit.
Up here, clean lasts about a day.
That is the difference between a fifteen dollar tunnel and what we do. Not how it looks pulling out of the bay, but how it looks after a week back on the hill.
Most weeks we are somewhere between Hilltop Park and the yards along Cherry, working in a driveway, a carport or whatever the street gives us. Half the driveways up here sit on a slope, which is fine. We bring our own water and power and we work around it.
A coating is the service that pays for itself fastest at this elevation. It gives the grit almost nothing to key into, so a rinse does something again. If the paint already carries swirls from being wiped dry, correction comes first.
That is the whole idea
Service area
Serving Signal Hill and everything around it
Signal Hill sits inside Long Beach, so almost everything around it is a few minutes either way.
Nearby cities we also cover
Not on the list? Send your cross streets. If it is outside the normal run, travel is quoted before you book and capped at $50.
Before you hand anyone your keys
Small hill, close quarters, real accountability
Signal Hill is small enough that reputation is everything. That works in your favor when you are choosing who touches your car.
Ask if they are insured. We are, and we will show you the certificate before we start. Ask what happens at the end. Here, we walk the car together in daylight and you point at anything that looks off before we pack up.
And you do not have to book to ask. Most messages get an answer within a few hours, and there is no rush on your end.
Signal Hill questions we get a lot
Do you come out to Signal Hill?
Yes, most weeks. It is about fifteen minutes from the shop in Cerritos and there is no travel charge anywhere in the service area. Call or text (562) 445-1457 and we will find a slot.
What do most people up here book?
The full detail is the usual first booking, from $150. A car that sits outside on the hill needs the bonded grit pulled off before anything else is worth doing, and that is what it covers.
Why does my hood look scratched in the sun?
Almost always from wiping dry grit off the paint. Those fine circular marks are in the clear coat rather than on it, so no wash will take them out. Paint correction is what levels them, and it starts with an inspection rather than a fixed price.
Will a ceramic coating stop the dust settling?
It will not stop it landing, but it changes what happens next. On a coated car the grit sits on top instead of keying into the paint, so a rinse takes most of it away. Coatings start at $800 and include correction first.
Is wax good enough for a car parked outside?
Wax looks great for a few weeks and then it is gone. A sealant lasts a season and a coating lasts years. If the car lives outside on the hill, wax is the one you will be reapplying most often.
Do you need my water and power?
No. The van carries both. All we need is room to park next to the car.
Can you do it while I am at work?
Yes, and most people do it that way. Leave the keys, we text you when it is done, and we walk the car together if you are back in time.
How long does it take?
An exterior detail is about an hour. A full detail is longer and a ceramic coating is a full day. We confirm the exact window when you book.
Let’s Talk Details
Tell me what you drive and what is bugging you about it. I have been at this four years and past a thousand cars, so I will tell you what yours actually needs. No pressure, and no weird sales stuff.