Best Engine Compression Gauges of 2025

"I usually borrow a compression tester, but this time I decided to order one. I saved on gas and it was delivered quickly. The range of adapters was perfect for my 1964 flathead I6. The gauge feels solid, and the hold function is very handy. I measured my cylinders at 140-150 PSI, and while I can't confirm its accuracy, the most important thing is that they are all fairly consistent. I'm very satisfied with my purchase!"

"I received my compression tester super quickly and put it to use the same day on my outboard motor. It worked flawlessly. The variety of fittings is impressive, and the case is fantastic for keeping everything organized. For about $25, I got a reliable tool that I can share with friends when they need it. I'm glad I made this purchase!"

"This is my first time using a compression tester, and I must say I'm impressed with its quality and organization. The Chinese touches are noticeable, but it gets the job done. I didn't expect much for the price, but it works well enough for my needs."

"I appreciate the accurate Schrader valve for my small engines. It's perfect for my needs."

"I chose this set because my old tester couldn't handle the newer small spark plugs in my Polaris Ranger, and it worked great!"

"This compression tester is a good value. My only concern is that some tubes had scratches, which makes me think it might have been used before. Overall, it seems well made and accurate, so I plan to keep it."

“I used this on my 1999 Honda Civic for a compression test, and it worked like a charm. While the instructions aren't perfect, having prior knowledge made a huge difference.”

“I loved adding this tool to my collection! I used it immediately with the rubber hose extension, and the threads fit my 2.7 liter engine perfectly. This tool is essential for diagnosing erratic misfires and potential oil consumption.”

“The product is good, but I couldn't use it because the hose that attaches to the spark plug didn't screw in properly. The hose itself is too soft and bends easily, causing inaccurate readings on several cylinders.”

"I have a lot of trouble reading compression gauges, but this one gets the job done at a great price! It's very handy having the gauge and adapters in one storage case, and the battery change is very easy. It seems to be fairly accurate, so I highly recommend it."

"This is the best tool I've bought in a while. It's extremely user-friendly and will definitely save me a lot of unnecessary troubleshooting."

"Using this tester was a breeze! The bright display made it easy to read, and with all the attachments, I can use it on multiple vehicles. Plus, I got it at a great price with fast shipping!"

"This compression gauge set is excellent for the value. It's easy to use and seems accurate and reliable. I haven't experienced any leakage so far, and the gauge is very readable."

"Overall, it gets the job done. I used it on my jet skis to check compression, and so far, I have had no issues. It's not an everyday tool for me, but it's nice to have. I’ve seen better-built options, so if you plan to use it more frequently, I’d suggest looking elsewhere. One of the fittings just wouldn't seal properly, leading to an inaccurate reading. However, the kit includes different parts, and I found one that worked better to give me a more accurate compression value. That's why I rated it 4 stars."

"I had another one somewhere, but I bought this one, and it works great."

"It worked well for a week, but then the gauge stopped reading above 25 psi on multiple pieces of equipment. Quite disappointing."

"It performed well, and I would buy it again if needed. However, I believe it will last for my needs in small engine work."

"I bought this to replace my old analog compression tester. The first cylinder worked well, but by cylinder 3, I noticed compression leaking. I had to use long needle nose pliers to retrieve the fitting that got stuck in the head. The brass fitting on the hose wasn’t attached well and pulled apart. Overall, I found the hose quality to be inferior compared to my previous tester. I don’t recommend this product."

"I recently picked this up for testing an engine on my new motorbike project. It worked wonderfully, and I was amazed at how affordable it was! This tool provided great peace of mind before I decided to pull the engine apart. I also own a more expensive diesel engine tester, and I can confidently say this one is a fantastic deal. Highly recommended!"

"I’ve been using this tool on my chainsaws, and it arrived just as promised, within a day. Everything was intact, and I put it to use right away. It worked flawlessly without any issues. Great value for the money!"

"I had no issues with quality. The blow molded case is nice. The instructions are easy to follow and printed on a little placard, so I won’t lose them. I just followed the directions in the factory service manual, and it was pretty simple!"

"I think this is a great tool! It works well, and the quality of the compression tester is impressive. I just wish my engine values were better!"

"I found this product to be really nice and I’m very happy with it. However, it doesn’t come with many adapters for different spark plug sizes."

"I found many different fittings that met my needs. I used this on my Foxbody Mustang fuel rail and it worked perfectly."

"I successfully diagnosed my 84 Subaru with this tool to understand why it wasn't firing on cylinders 1 & 3. It turned out to be a bad head gasket. At $15, it felt fine in quality, though the case seemed a bit cheap—but the gauge's performance is what truly matters."

"This item performed just as I expected. I don't plan on using it often; however, I believe it will last a long time based on my DIY usage."

"I haven't used it yet, but it looks good in the case. I'll keep you posted."

"I used it once and I trust the reading. I'm satisfied so far."

"The item is exactly as described and pictured. It works great!"

"As a small engine mechanic, I use this tester almost daily. It works great!"

"This kit included an adapter for my R56 N12 Mini Cooper, and the results confirmed my suspicion without any mechanic fees! Testing compression was easy and fun, and I plan to test my friends' and family's cars too. I'm very satisfied with the quality and performance of all parts and the case."

"I bought this for my old Fords, but it doesn't have a large enough adapter for my spark plugs. I'm returning this kit and ordering a more expensive one. I hope it fits!"