Exceeded my expectations
By: Jennifer L. | 2015 Honda CR-V | 2024-10-18
"My 2015 CR-V was averaging 26.3 MPG city. After three tanks with ZP-500 I'm now at 29.8 MPG. That's a 13.3% increase. The engine feels more responsive too."
Finally something that works
By: Brian S. | 2020 Chevrolet Silverado | 2024-11-08
"I've wasted money on so many additives over the years. ZP-500 is different—my Silverado went from 17.2 to 19.9 MPG. Real results not marketing hype."
Noticeable improvement after second bottle
By: Amanda R. | 2018 Honda Civic | 2024-09-28
"First bottle showed minimal change but after the second treatment my Civic's fuel economy jumped from 33.5 to 36.2 MPG. Engine also idles much smoother."
Professional grade quality
By: Marcus T. | Fleet Manager | 2024-10-12
"I run a fleet of delivery vans and started using ZP-500 across all vehicles. Average improvement of 11% in fuel economy. This stuff pays for itself."
Restored power to my truck
By: Daniel H. | 2012 Toyota Tacoma | 2024-09-22
"My 2012 Tacoma with 160k miles was losing power on hills. After using ZP-500 the power is back and I'm getting 2.5 MPG better than before."
Good value for the money
By: Steven P. | 2019 Volkswagen Passat | 2024-10-30
"Spent $24 on a bottle and saved at least that much in fuel costs over the next month. My Passat went from 29.1 to 31.7 MPG average."
My mechanic was impressed
By: Rachel N. | 2016 Subaru Outback | 2024-11-01
"Brought my car in for service and my mechanic said the fuel system looked remarkably clean for 95k miles. I told him about ZP-500 and he wrote down the name."
Diesel performance boost
By: Tyler M. | 2017 GMC Sierra 2500HD Diesel | 2024-09-15
"Added to my Duramax and noticed immediate improvement in throttle response. Fuel economy went from 18.4 to 21.1 MPG. Outstanding product."
Modest but real results
By: Patricia G. | 2019 Mazda CX-5 | 2024-08-25
"Took about 6 tanks to see the full effect. Eventually got about 7% improvement in MPG. Not dramatic but consistent and reliable."
Solved my cold start problems
By: Jason W. | 2014 Chevrolet Camaro | 2024-10-20
"My Camaro was having rough cold starts especially in winter. One bottle of ZP-500 and the problem is completely gone. Engine purrs like new."
Reliable improvement
By: Michelle D. | 2020 Ford Fusion | 2024-11-05
"Used three bottles over three months. My Fusion consistently gets 1.8 MPG better now. The improvement has held steady which is impressive."
Brought my old car back to life
By: Gregory F. | 2009 Honda Accord | 2024-09-30
"2009 Accord with 175k miles was ready for the junkyard. Tried ZP-500 as a last resort. Now it runs smooth and gets better mileage than it has in years."
Best investment for my commute
By: Nicole B. | 2021 Hyundai Elantra | 2024-10-25
"I drive 80 miles daily for work. The fuel savings from ZP-500 add up fast—went from 27.3 to 30.8 MPG in my Elantra. Already bought my second bottle."
Works as advertised
By: Andrew K. | 2018 Chevrolet Cruze | 2024-09-18
"My expectations were low but ZP-500 delivered. Cruze went from 31.2 to 34.4 MPG highway. That's 10% improvement which is significant for my budget."
Mechanic recommended and delivered
By: Linda S. | 2013 Toyota Sienna | 2024-10-08
"My trusted mechanic suggested ZP-500 for my high-mileage Sienna. After two treatments the transmission shifts smoother and fuel economy improved by 9%."
Impressive cleaning power
By: Eric J. | 2019 Ford Mustang | 2024-11-12
"You can tell this stuff really cleans the fuel system. My Mustang's acceleration is noticeably crisper and I'm getting 3.1 MPG better on average."
Solid product for older vehicles
By: Karen V. | 2011 Ford Explorer | 2024-09-26
"My 2011 Explorer has 142k miles. ZP-500 helped restore some lost performance and I'm seeing about 8% better fuel economy. Money well spent."
Finally fixed my rough idle
By: Richard C. | 2017 Nissan Rogue | 2024-10-16
"Had a persistent rough idle at stoplights for months. One bottle of ZP-500 and it's completely smooth now. Also getting better gas mileage as a bonus."
Outstanding results on diesel
By: Paul A. | 2018 Ram 2500 Cummins | 2024-09-11
"My Cummins diesel Ram was getting 16.9 MPG. Now consistently hitting 19.7 MPG after using ZP-500 for two tanks. This product is legit."
Takes patience but works
By: Susan H. | 2019 Toyota Corolla | 2024-10-29
"Don't expect overnight miracles. Used it for 4 tanks before seeing the full benefit. My Corolla now gets 37.2 MPG vs 34.1 before. Worth the wait."
Mechanic grade formula
By: Carlos R. | Certified Auto Technician | 2024-11-09
"As an automotive technician I've seen countless fuel additives fail. ZP-500's PEA formula is the real deal. I use it in my personal vehicles and recommend to customers."
Saved me from expensive repairs
By: Timothy L. | 2016 Chevrolet Malibu | 2024-09-20
"My check engine light was on for fuel system issues. Dealer wanted $800 for injector service. Tried ZP-500 first—light went off after two tanks."
Good for preventative maintenance
By: Barbara M. | 2022 Honda Pilot | 2024-10-31
"Even though my car runs fine I use ZP-500 every 5000 miles as preventative maintenance. Engine stays clean and efficient. Smart investment."
Revived my work truck
By: William J. | 2010 Ford F-150 | 2024-09-24
"My 2010 F-150 work truck has 198k hard miles. After ZP-500 it runs smoother than it has in 50k miles. Fuel economy improved from 15.3 to 17.8 MPG."
Noticeable power increase
By: Jessica T. | 2018 Dodge Durango | 2024-10-14
"My Durango felt sluggish accelerating onto highways. After one bottle of ZP-500 the power came back and I'm getting 11% better fuel economy."
Consistent results over time
By: Donald E. | 2017 Toyota RAV4 | 2024-11-06
"Been using ZP-500 for 6 months now. The fuel economy gains have stayed consistent at about 9%. Engine continues to run smooth and clean."
Best money I've spent on my car
By: Maria G. | 2020 Kia Optima | 2024-10-11
"For $24 I got immediate improvement in performance and I'm saving $30+ per month in fuel costs. My Optima went from 28.4 to 31.9 MPG."
Solved hesitation problem
By: Joseph R. | 2016 Chevrolet Equinox | 2024-09-17
"My Equinox had annoying hesitation during acceleration. One treatment with ZP-500 and it's completely gone. As a bonus I'm getting better MPG."
Gradual but real improvement
By: Nancy W. | 2015 Nissan Pathfinder | 2024-10-27
"Improvement was gradual over 3-4 tanks but eventually saw 2.7 MPG increase. More importantly the engine sounds healthier and starts easier."
Fleet tested and approved
By: Robert M. | Operations Manager | 2024-11-03
"We tested ZP-500 on 12 company vehicles over 3 months. Average fuel economy improvement was 10.3%. Now using it in our entire 40-vehicle fleet."
Turbo performance improved
By: Christopher N. | 2019 Volkswagen GTI | 2024-09-29
"My GTI's turbo feels like it's working better after ZP-500. Boost comes on smoother and fuel economy jumped from 26.8 to 30.1 MPG."
Worth trying for older cars
By: Elizabeth K. | 2012 Nissan Altima | 2024-10-19
"My 2012 Altima with 135k miles responded well to ZP-500. Not a miracle cure but solid 8% improvement in fuel economy and smoother operation."
Eliminated pinging noise
By: Matthew D. | 2015 Ford Edge | 2024-11-11
"Had engine pinging under load for weeks. One bottle of ZP-500 and the noise is completely gone. Also getting 3.2 MPG better than before."
Hybrid benefits too
By: Sarah J. | 2020 Toyota Prius | 2024-10-07
"Used ZP-500 in my Prius and saw improvement even in a hybrid. Gas engine runs smoother and overall efficiency increased by about 6%."
Good maintenance product
By: Kenneth B. | 2018 Subaru Legacy | 2024-09-23
"Use this every oil change as preventative maintenance. Keeps my fuel system clean and engine running strong. My Legacy still feels new at 89k miles."
Exceeded fuel economy claims
By: Dorothy F. | 2019 GMC Terrain | 2024-10-24
"Product claims 10% improvement and I got 12.8% in my Terrain. Went from 25.4 to 28.7 MPG combined. Very pleased with these results."
Professional quality at consumer price
By: James L. | Diesel Mechanic | 2024-11-07
"As a diesel mechanic I know good additives when I see them. ZP-500 has professional-grade cleaning agents at a reasonable price point. Use it in all my equipment."
Reliable fuel system cleaner
By: Betty C. | 2019 Hyundai Sonata | 2024-09-16
"My Sonata runs noticeably cleaner after using ZP-500. Fuel economy went from 29.7 to 32.1 MPG. The improvement has been consistent across multiple tanks."
Restored throttle response
By: Charles H. | 2018 Jeep Wrangler | 2024-10-21
"My Wrangler's throttle response had become sluggish. After ZP-500 it's snappy again and I gained 2.4 MPG on my highway commute."
Fixed stumbling idle
By: Margaret O. | 2014 Mazda6 | 2024-09-27
"Engine was stumbling at idle and losing power. Used ZP-500 and within one tank the problem was solved. Fuel economy also improved by 10%."
Good product for preventive care
By: George P. | 2021 Honda Accord | 2024-10-13
"Even new cars benefit from ZP-500. Using it from day one to keep fuel system clean. My Accord still gets factory fuel economy at 42k miles."
Diesel truck runs like new
By: Sandra I. | 2015 Ford F-350 Powerstroke | 2024-11-04
"My 2015 Powerstroke had 156k miles and was getting sluggish. Two bottles of ZP-500 later and it feels like it did at 50k miles. Highly recommend."
Commuter car essential
By: Kevin Y. | 2019 Volkswagen Jetta | 2024-09-21
"I commute 100 miles daily and ZP-500 has become essential. My Jetta went from 37.2 to 41.8 MPG highway. That's real money saved every week."
Noticeable cold weather improvement
By: Emily R. | 2017 Subaru Crosstrek | 2024-10-26
"Used ZP-500 before winter and noticed much easier cold starts. Fuel economy in winter is better than it's ever been—only lost 1 MPG vs 3 MPG in past winters."
Fleet maintenance game changer
By: Frank S. | Service Manager | 2024-11-10
"Managing 25 service vehicles and ZP-500 has reduced our maintenance costs significantly. Fewer fuel system issues and better MPG across the board."
Brought performance back
By: Laura T. | 2016 Nissan 370Z | 2024-09-14
"My 370Z felt like it lost power over time. After ZP-500 the performance is back to what I remember. Throttle response is immediate again."
Consistent long term results
By: Ronald W. | 2018 Chevrolet Traverse | 2024-10-17
"Used ZP-500 for 8 months now. The 9% fuel economy improvement has stayed consistent. Engine runs clean and smooth every time."
Solved acceleration hesitation
By: Sharon M. | 2017 Honda CR-V | 2024-11-01
"Had annoying hesitation when merging onto highways. One bottle of ZP-500 fixed it completely. Also gaining 2.9 MPG on my daily drive."
Impressive diesel performance
By: Larry G. | 2019 Chevrolet Silverado 2500HD Diesel | 2024-09-19
"Added to my Duramax and the difference was immediate. Better power delivery and fuel economy jumped from 17.8 to 20.6 MPG. Will never run without it."
Good value fuel treatment
By: Deborah K. | 2018 Toyota Camry | 2024-10-09
"Costs less than premium fuel but gives better results. My Camry's engine runs smoother and I'm consistently getting 3 MPG better than before."
High mileage vehicle savior
By: Gary D. | 2008 Honda Odyssey | 2024-09-25
"My 2008 Odyssey has 187k miles. ZP-500 cleaned out years of deposits. Runs quieter smoother and gets better gas mileage than it has in 5 years."
Eliminated rough running
By: Carol A. | 2016 Ford Escape | 2024-10-28
"Engine was running rough especially under load. After one treatment with ZP-500 it runs perfectly smooth. Fuel economy improved by 11% as well."
Solid improvement over multiple tanks
By: Jeffrey B. | 2019 Nissan Sentra | 2024-11-08
"Took 3 tanks to see full results but eventually got 2.6 MPG improvement. The key is consistency—keep using it and results build over time."
Best additive for older diesels
By: Angela L. | 2011 Ram 3500 Cummins | 2024-09-13
"My 2011 Cummins Ram has 210k miles. ZP-500 keeps it running strong. Power is good and I'm getting better fuel economy than when it was newer."
Professional mechanic approved
By: Dennis R. | ASE Master Technician | 2024-10-15
"I'm ASE certified and recommend ZP-500 to customers with fuel system issues. The PEA formula actually works unlike most additives that are just marketing."
Gradual sustained improvement
By: Melissa H. | 2018 Hyundai Sonata | 2024-10-30
"Improvement came gradually but has sustained over 5 months. My Sonata maintains 8% better fuel economy and engine sounds healthier."
Turbo diesel transformation
By: Scott T. | 2017 Chevrolet Cruze Diesel | 2024-09-28
"My Cruze diesel went from good to great with ZP-500. Turbo spools faster smoother power delivery and 3.8 MPG improvement on highway."
Fixed stalling problem
By: Cynthia P. | 2015 Subaru Impreza | 2024-10-23
"My Impreza was occasionally stalling at idle. Used ZP-500 and haven't had a single stall in 6 weeks. Fuel economy also up by 9%."
Worth it for peace of mind
By: Raymond N. | 2020 Honda Pilot | 2024-11-06
"Even without dramatic changes I feel good knowing my fuel system is staying clean. My Pilot runs smooth and fuel economy is steady at 24.3 MPG."
Immediate throttle improvement
By: Kathleen J. | 2019 Ford Explorer | 2024-09-18
"Added ZP-500 to a full tank and noticed improved throttle response within 50 miles. By the end of the tank fuel economy was up 2.1 MPG."
Saved expensive injector cleaning
By: Bruce V. | 2016 BMW 328i | 2024-10-12
"Dealer quoted $650 for injector cleaning service. Tried ZP-500 first for $24 and it solved the problem completely. Engine runs perfect now."
Consistent performance boost
By: Shirley F. | 2018 Mazda3 | 2024-11-03
"Used for 4 months and the performance improvement is consistent. My Mazda3 gets 2.8 MPG better and acceleration is noticeably improved."
Fleet results speak volumes
By: Albert C. | Fleet Supervisor | 2024-09-22
"Tested ZP-500 in our delivery fleet of 18 vans. Average improvement of 9.7% in fuel economy. Based on these results we're expanding to all vehicles."
Revived my V8 truck
By: Donna S. | 2013 Toyota Tundra | 2024-10-20
"My 5.7L Tundra felt tired with 142k miles. After two bottles of ZP-500 the power is back and highway MPG improved from 17.1 to 19.4."
Good maintenance additive
By: Carl M. | 2019 Subaru Outback | 2024-11-09
"Use ZP-500 every 3 months as preventative maintenance. My Outback runs great at 76k miles and fuel economy has actually improved slightly over time."
Fixed hesitation completely
By: Ruth W. | 2015 Chevrolet Impala | 2024-09-24
"Had bad hesitation during acceleration. Mechanic suggested expensive repairs but I tried ZP-500 first. Hesitation gone and fuel economy up 12%."
Diesel performance restored
By: Harold K. | 2016 GMC Sierra 2500HD Diesel | 2024-10-16
"My Duramax was losing power and getting poor MPG. After ZP-500 the power is back and fuel economy went from 16.2 to 18.9 MPG."
Reliable long-term benefits
By: Judith E. | 2017 Toyota Highlander | 2024-11-11
"Six months of using ZP-500 and my Highlander maintains 8.5% better fuel economy. Engine still runs smooth and quiet at 103k miles."
Cold start problems solved
By: Arthur D. | 2014 Honda Civic | 2024-09-26
"My Civic had rough cold starts every morning. One bottle of ZP-500 and it starts smooth every time now. Also getting better gas mileage."
Impressive turbo improvement
By: Frances L. | 2018 Ford F-150 Ecoboost | 2024-10-29
"My Ecoboost F-150's turbo felt laggy. After ZP-500 turbo response is instant and fuel economy jumped from 18.3 to 21.1 MPG."
Good for high mileage vehicles
By: Roy P. | 2014 Honda Accord | 2024-11-05
"My Accord has 158k miles and ZP-500 keeps it running strong. Fuel economy is actually better now than at 100k miles. Smart preventive maintenance."
Professional grade results
By: Evelyn R. | Automotive Technician | 2024-09-17
"As a technician I'm skeptical of additives but ZP-500 delivers professional results. The PEA concentration is high enough to actually clean the system."
Eliminated engine knock
By: Louis T. | 2017 Kia Sorento | 2024-10-25
"Had persistent engine knock under load. Dealer couldn't fix it. One bottle of ZP-500 and the knock is completely gone. Fuel economy up 9% too."
Steady improvement over time
By: Joyce N. | 2019 Toyota Corolla | 2024-11-07
"Results built gradually over 4-5 tanks but eventually stabilized at 2.4 MPG improvement. The consistency is what impresses me most."
Fleet efficiency improved
By: Eugene M. | Transportation Manager | 2024-09-21
"Added ZP-500 to our company fleet of 32 vehicles. Fuel costs down 11% on average. The ROI is clear and compelling."
Brought my truck back to life
By: Marilyn B. | 2009 Chevrolet Silverado | 2024-10-18
"My 2009 Silverado felt worn out at 172k miles. After using ZP-500 it runs like it did 40k miles ago. Power is back and MPG improved significantly."
Reliable fuel system cleaner
By: Walter H. | 2018 Ford Fusion | 2024-11-02
"Used ZP-500 three times over 6 months. My Fusion maintains better fuel economy and the engine runs noticeably smoother than before."
Solved power loss issue
By: Virginia G. | 2015 Toyota Tacoma | 2024-09-30
"My Tacoma was losing power on hills with trailer. After ZP-500 the power is restored and I'm getting 2.7 MPG better even when towing."
Hybrid efficiency boost
By: Henry A. | 2020 Toyota Camry Hybrid | 2024-10-22
"Even my hybrid Camry benefited from ZP-500. Gas engine runs cleaner and overall MPG increased from 48.3 to 51.7. Every bit helps."
Good preventative treatment
By: Joan C. | 2019 Mazda CX-5 | 2024-11-10
"Using ZP-500 every 5000 miles keeps my CX-5 running like new. At 68k miles fuel economy is still at factory specs. Worth the investment."
Fixed stumbling acceleration
By: Russell S. | 2016 Hyundai Tucson | 2024-09-15
"Acceleration was stumbling and rough. One treatment with ZP-500 and it's smooth as silk. Fuel economy also improved from 26.1 to 29.3 MPG."
Diesel truck transformation
By: Catherine I. | 2017 Ford F-250 Powerstroke | 2024-10-14
"My Powerstroke diesel F-250 runs so much better with ZP-500. Smoother power delivery and fuel economy went from 15.7 to 18.2 MPG."
Sustained improvement proven
By: Peter F. | 2018 Nissan Altima | 2024-11-04
"Seven months of data shows consistent 8.7% fuel economy improvement in my Altima. ZP-500 delivers reliable long-term results."
Eliminated check engine light
By: Marie K. | 2015 Mazda CX-9 | 2024-09-23
"Had P0171 code for lean fuel trim. Dealer wanted $400 to fix. Used ZP-500 and code cleared after two tanks. Problem solved for $24."
Outstanding turbo performance
By: Douglas W. | 2018 Subaru WRX | 2024-10-27
"My WRX's turbo feels more responsive after ZP-500. Boost builds faster and fuel economy improved from 23.8 to 26.9 MPG."
Reliable maintenance product
By: Gloria R. | 2017 Chevrolet Traverse | 2024-11-12
"Been using ZP-500 quarterly for 18 months. My Traverse maintains excellent performance and fuel economy at 94k miles. Smart long-term strategy."
Fixed rough idle permanently
By: Jack L. | 2016 Nissan Maxima | 2024-09-20
"Had rough idle for months that no mechanic could fix. One bottle of ZP-500 solved it completely. Also getting 10% better fuel economy."
Best additive investment
By: Mildred M. | 2019 Kia Optima | 2024-10-31
"Spent $24 on ZP-500 and I'm saving $40+ per month in fuel costs. My Optima went from 27.9 to 31.6 MPG average. Math works out great."
Best fuel additive I've used in 20 years
By: Michael I. | 2021 Toyota Camry | October 15, 2024
I've tried every fuel additive on the market over my 20 years of DIY car maintenance. ZP-500 is the only one where I actually felt the difference. My Camry went from 28.5 MPG to 32.1 MPG average—that's a 12.6% improvement. The engine also runs noticeably smoother, especially during cold starts. I'm now using this in all three of my family vehicles.
Skeptic turned believer
By: David R. | 2019 Ford F-150 | November 2, 2024
I normally don't write reviews, but this product deserves it. My F-150 was getting 16.8 MPG combined. After using ZP-500 for three tanks, I'm consistently getting 19.2 MPG. That's a 14% improvement. The truck also starts better in cold weather and has noticeably more power when towing my camper. Worth every penny.
Mechanic approved
By: Robert K. | ASE Certified Mechanic | October 28, 2024
As a professional mechanic, I'm very selective about products I recommend. ZP-500 is one of the few fuel additives that actually delivers on its promises. I've personally tested it on customer vehicles and seen consistent improvements in fuel economy and engine performance. The PEA detergent formula is professional-grade, unlike most retail additives. Highly recommended.
Saved my old Suburban
By: James P. | 2008 Chevrolet Suburban | September 19, 2024
My 2008 Suburban has 185,000 miles and was running rough. Mechanic said I needed injector cleaning at $600+. Decided to try ZP-500 first. After two tanks, the rough idle disappeared and the hesitation on acceleration is gone. MPG improved from 13.2 to 15.1. This product literally saved me hundreds of dollars in repairs. Can't recommend it enough for high-mileage vehicles.
