Pemex's That Cheat List
I picked this link up from another forum. Only lists about 3000 stations that give less than what it says on the pump. Would have been easier to make a list of the honest stations. You could put that ...
Forum Discussion
On further note, before we pull out the flaming torches on Pemex station owners, here is a little food for thought about fuel stations in the U.S. although it doesn't address the issue of cheating which does exist in any country where there is a pump and a computer chip involved:
Vendors of gasoline are subject to a variety of state and federal laws requiring them to maintain adequately calibrated dispensing equipment and calling for periodic inspections by government regulatory agencies to ensure that they are in compliance with said laws. However, this does not guarantee that every gas pump you might encounter will necessarily be accurate, for a variety of reasons: Some agencies may not have the funds to regularly carry out required inspections at every location, regulators' equipment might itself be inaccurate, understaffed agencies may not be able to adequately enforce compliance with regulations, etc.
Furthermore, instances of malfunctioning or improperly calibrated pumps are not necessarily indicators that a particular gasoline vendor is "cheating." Such irregularities may be due to worn-out equipment which can be difficult to spot (and is about as likely to cheat the vendor as it is the customer), such as the common occurrence of worn check valves:
Some alert consumers have noticed it over the years: A pump that seems to hesitate a second when the lever is squeezed. Anywhere from 2 to 6 cents tick off before the rush of gasoline starts. That's what happens with a common, hard to diagnose and mostly ignored problem with the "check valve," which is supposed to make sure gas flows at the same time the price meter starts.
Don't blame the gas guys. Even consumer advocates say retailers may be losing as often as consumers, and no one appears able to rig the meters. But the small "check valve" at the end of the multibillion dollar industry just wears out, and often goes unnoticed for months.
A bad valve can also work against retailers, freezing the price gauge for an instant after gas starts. No one's sure who gets gored more, or how deeply.
Unfortunately, much of the responsibility for spotting such irregularities and reporting them to regulatory agencies falls upon consumers themselves, and it isn't always easy for the average consumer to notice problems like the ones described in the above-quoted message. Determining whether a particular pump is correctly reporting the amount of gasoline dispensed can be rather difficult, especially if the difference is relatively small — just about all consumers can do in this area is to be aware of how much gasoline their vehicles should take at various fuel gauge level readings and note whether the reported number of gallons they buy corresponds to this number. (That is, if you know your car typically takes seven gallons to fill when your gas gauge needle is on the halfway mark, you should be concerned if a half-tank fill-up suddenly takes eight or nine gallons instead. Note that you need to learn this system by trial and error: Because gas gauge needles do not necessarily move at an even rate across the full range between "F" and "E", you can't assume that a car with a 14-gallon gas tank will necessarily take exactly seven gallons to fill when the needle sits on the halfway mark.)
It's much easier to determine whether pumps are accurately registering the proper charge for the amount of gasoline dispensed simply by multiplying the number of gallons you buy by the price per gallon. (If you can't easily do this calculation in your head, you can either use a calculator or employ the suggested method of noting the total dollar charge at the moment the pump reads exactly ten gallons dispensed.) But of course, catching this sort of problem is only possible if the pump is accurately reporting the amount of gasoline dispensed, which, as noted above, is usually much more difficult to determine. (It can also be the case that gas pumps which test as correctly calibrated when dispensing, say, five gallons of gasoline may not necessarily test as correctly calibrated when dispensing smaller or larger amounts of fuel.)
For now, though, it's generally the case that the retail gasoline industry has a number of other (and bigger) problems to deal with, and that consumers have not (so far) been very aggressive in reporting the problems they might encounter:
"I think our industry would love to replace anything that wears down," Bob Renkes of the Petroleum Equipment Institute said. But the check valves aren't a high priority when the industry is dealing with issues such as preventing identity theft when swipe cards are used, static electricity discharges and the 5 percent of retailers whose old mechanical equipment can't register a price of $4 a gallon.
State and local regulators doubt any but the most ambitious consumers would contact them in case of a problem, even though the phone numbers are on inspection stickers. More likely, consumers fume and wonder if they were cheated, or report it to the manager of the gas station or convenience store.
Vendors of gasoline are subject to a variety of state and federal laws requiring them to maintain adequately calibrated dispensing equipment and calling for periodic inspections by government regulatory agencies to ensure that they are in compliance with said laws. However, this does not guarantee that every gas pump you might encounter will necessarily be accurate, for a variety of reasons: Some agencies may not have the funds to regularly carry out required inspections at every location, regulators' equipment might itself be inaccurate, understaffed agencies may not be able to adequately enforce compliance with regulations, etc.
Furthermore, instances of malfunctioning or improperly calibrated pumps are not necessarily indicators that a particular gasoline vendor is "cheating." Such irregularities may be due to worn-out equipment which can be difficult to spot (and is about as likely to cheat the vendor as it is the customer), such as the common occurrence of worn check valves:
Some alert consumers have noticed it over the years: A pump that seems to hesitate a second when the lever is squeezed. Anywhere from 2 to 6 cents tick off before the rush of gasoline starts. That's what happens with a common, hard to diagnose and mostly ignored problem with the "check valve," which is supposed to make sure gas flows at the same time the price meter starts.
Don't blame the gas guys. Even consumer advocates say retailers may be losing as often as consumers, and no one appears able to rig the meters. But the small "check valve" at the end of the multibillion dollar industry just wears out, and often goes unnoticed for months.
A bad valve can also work against retailers, freezing the price gauge for an instant after gas starts. No one's sure who gets gored more, or how deeply.
Unfortunately, much of the responsibility for spotting such irregularities and reporting them to regulatory agencies falls upon consumers themselves, and it isn't always easy for the average consumer to notice problems like the ones described in the above-quoted message. Determining whether a particular pump is correctly reporting the amount of gasoline dispensed can be rather difficult, especially if the difference is relatively small — just about all consumers can do in this area is to be aware of how much gasoline their vehicles should take at various fuel gauge level readings and note whether the reported number of gallons they buy corresponds to this number. (That is, if you know your car typically takes seven gallons to fill when your gas gauge needle is on the halfway mark, you should be concerned if a half-tank fill-up suddenly takes eight or nine gallons instead. Note that you need to learn this system by trial and error: Because gas gauge needles do not necessarily move at an even rate across the full range between "F" and "E", you can't assume that a car with a 14-gallon gas tank will necessarily take exactly seven gallons to fill when the needle sits on the halfway mark.)
It's much easier to determine whether pumps are accurately registering the proper charge for the amount of gasoline dispensed simply by multiplying the number of gallons you buy by the price per gallon. (If you can't easily do this calculation in your head, you can either use a calculator or employ the suggested method of noting the total dollar charge at the moment the pump reads exactly ten gallons dispensed.) But of course, catching this sort of problem is only possible if the pump is accurately reporting the amount of gasoline dispensed, which, as noted above, is usually much more difficult to determine. (It can also be the case that gas pumps which test as correctly calibrated when dispensing, say, five gallons of gasoline may not necessarily test as correctly calibrated when dispensing smaller or larger amounts of fuel.)
For now, though, it's generally the case that the retail gasoline industry has a number of other (and bigger) problems to deal with, and that consumers have not (so far) been very aggressive in reporting the problems they might encounter:
"I think our industry would love to replace anything that wears down," Bob Renkes of the Petroleum Equipment Institute said. But the check valves aren't a high priority when the industry is dealing with issues such as preventing identity theft when swipe cards are used, static electricity discharges and the 5 percent of retailers whose old mechanical equipment can't register a price of $4 a gallon.
State and local regulators doubt any but the most ambitious consumers would contact them in case of a problem, even though the phone numbers are on inspection stickers. More likely, consumers fume and wonder if they were cheated, or report it to the manager of the gas station or convenience store.
