Most oil filters sit on the side or bottom of your engine block
The oil filter's location depends on your vehicle's make, model, and engine layout, but it is almost always mounted directly to the engine itself rather than hidden in a hard-to-reach spot. On most cars, you will find it on the side of the engine block — typically somewhere between the engine and the wheel well on the driver's or passenger's side. On some vehicles, especially those with transverse engines (engines mounted sideways), the filter hangs underneath or toward the back of the engine bay.
The filter is cylindrical, about the size of a soda can or slightly larger, and has a metal base plate that screws onto a threaded port on the engine. It will have an oil-stained appearance if the vehicle has been driven, and you may see a small amount of oil residue around the base where it connects to the engine. The exact position matters because you need to access it without removing other engine components, and because oil will drain from it when you loosen it.
Key Takeaways
- Your owner's manual or a quick search for your vehicle's year, make, and model will show you the exact filter location before you start work.
- The filter is always mounted on the engine block itself, never buried inside the engine or tucked behind the radiator in a way that requires major disassembly.
- You need clearance underneath the filter to catch draining oil, so knowing the location helps you position a drain pan correctly.
- Some vehicles have the filter mounted vertically (pointing up or down), while others mount it horizontally; the orientation affects how you turn the wrench and where oil spills.
How to locate your filter before you start
The fastest way to find your filter is to check your owner's manual, which includes a diagram of the engine bay with the filter marked. If you do not have the manual, search online for "[year] [make] [model] oil filter location" — automotive forums and YouTube videos for your exact vehicle will show you where it is and often demonstrate the removal process from that angle.
If you are at the vehicle, open the hood and look at the engine block itself. The filter will be a cylindrical metal canister with a threaded base screwed onto the engine. Run your hand along the sides and bottom of the engine block, checking for this shape. If you cannot spot it when ready, trace the oil filler cap (the large cap on top of the engine where you pour new oil) and look nearby — the filter is often within a foot or two of that cap.
Common filter positions by engine layout
Engines mounted lengthwise in the engine bay (longitudinal engines, common in rear-wheel-drive and many all-wheel-drive vehicles) usually have the filter on one side of the block, often toward the front or middle. You can typically reach it from the side without removing the wheel or bumper.
Engines mounted sideways across the engine bay (transverse engines, standard in front-wheel-drive cars) often have the filter mounted lower or toward the back of the engine. On these vehicles, you may need to remove the passenger-side wheel or access the filter from underneath the vehicle. Some transverse-engine vehicles mount the filter on top of the engine, making it easier to reach.
Trucks and SUVs with larger engines sometimes mount the filter on the passenger side of the engine block, positioned so that it drains into the oil pan below. A few models place the filter on the driver's side instead. The owner's manual will clarify which side applies to your vehicle.
Why the filter position matters for your oil change
The location determines how much space you have to work and where oil will drain. If the filter points downward, oil will flow straight down into your drain pan when you loosen it. If it points to the side or at an angle, oil may run down the engine block or drip onto other components, so you need to position your pan accordingly.
Knowing the position also tells you whether you can reach the filter by hand or whether you will need a filter wrench — a tool that grips the cylindrical body and lets you turn it without your hand slipping. If the filter is in a tight spot against the engine block or frame, a wrench becomes essential. If it is in an open area on the side of the engine, you may be able to unscrew it by hand after breaking it loose.
Some vehicles require you to remove the wheel, bumper, or splash shield to access the filter. Knowing this in advance saves you time and frustration. If your vehicle is one of these, you may decide to have the filter changed at a shop rather than doing it yourself.
Accessing the filter if it is mounted low or underneath
If your filter is mounted on the bottom of the engine or requires access from underneath, you will need to raise the vehicle safely. Use a jack and jack stands, never a jack alone — a vehicle falling off a jack can cause serious injury. Raise the vehicle only as high as you need to fit your hand and drain pan underneath.
Once the vehicle is raised, you may need to remove the plastic splash shield that covers the underside of the engine bay. This shield is usually held on by plastic clips or a few bolts and can be removed in minutes. After you remove the shield, the filter will be visible and accessible. Always reinstall the shield after you finish, as it protects the engine from road debris and water.
What to do if you cannot find the filter
If you have looked at the engine block and cannot locate a cylindrical canister, check whether your vehicle uses a cartridge-style filter instead of a spin-on filter. Cartridge filters are housed inside a plastic or metal container on top of the engine, usually near the oil filler cap. You unscrew the container's cap rather than unscrewing the entire filter. The owner's manual will tell you which type your vehicle has.
If you still cannot find it, post a photo of your engine bay on an automotive forum specific to your vehicle's make and model, or search YouTube for a video of an oil change on your exact year and model. Someone who owns the same vehicle will point you to the filter's location. Do not guess or force anything — taking five minutes to find the right part saves you from damaging the engine or wasting time on the wrong component.
Frequently Asked Questions
Can the oil filter be in different places on the same model year?
No. All vehicles of the same year, make, and model have the filter in the same location. However, different model years of the same vehicle may have the filter in different spots, so make sure you are looking up your specific year, not just the model name.
Is the oil filter always on the outside of the engine?
Yes. The filter is always mounted on the exterior of the engine block, accessible from the engine bay or from underneath the vehicle. It is never buried inside the engine or hidden behind major components that require engine disassembly to reach.
What if the filter is so tight I cannot turn it by hand?
Use an oil filter wrench, which costs ten to twenty dollars and grips the cylindrical body so you can turn it without your hand slipping. Loosen it a quarter turn first to break the seal, then turn it the rest of the way. If it is still stuck, explore penetrating oil and wait a few minutes before trying again.
Do I need to remove anything to reach the filter?
On most vehicles, no. On some, you may need to remove the wheel, bumper, or plastic splash shield. Your owner's manual or a video of an oil change on your exact model will show you whether removal is necessary before you start.