What 5.0 L/100km Costs You On A Multan To Lahore Motorway Run

The Run And The Two Cars

At 5.0 L/100km, the 340 kilometer motorway run from Multan to Lahore burns 17.0 liters of petrol. At the notified price of Rs 379.25 a liter in late October 2026, that is Rs 6,447 in fuel, one way, tolls excluded. My uncle's SUV, which returns 9.5 L/100km on the same road, burns 32.3 liters and pays Rs 12,250 for the same tarmac. One run, one road, and a gap of about Rs 5,803 between the two cars before either of them has moved a meter in Lahore traffic.

I costed this trip the way my family actually argues about it: seat by seat, the night before a family run to Lahore. The sedan would carry four people, which puts the fuel at Rs 1,612 a head. The SUV would carry six, which sounds like the cleverer plan until you divide its fuel bill the same way and get Rs 2,042 a head. The bigger car lost on total cost and on cost per seat, which settled an argument that per-liter prices had failed to settle for years. Nobody in my family feels a per-liter figure. Everybody feels a per-trip figure, and a per-person figure most of all.

The distance needs one honest note. Multan to Lahore by the motorway chain measures about 340 kilometers depending on which interchange you enter and leave by, and I use 340 throughout this article. If your exits give you 330 or 355, the method below absorbs your number unchanged. The formula is the article. The 340 is just my family's road.

The Formula, Worked In Rupees

Every fuel cost question I meet reduces to one line: cost equals distance in kilometers, times the car's L/100km figure, times the price per liter, divided by 100. Run my sedan through it. Distance 340, times 5.0, times 379.25, divided by 100 gives Rs 6,447.25. The liters alone are distance times the rate divided by 100, which is 340 times 5.0 divided by 100, or 17.0 liters exactly.

The rate your car reports might not arrive in L/100km. If it comes as MPG, it has to be converted before it enters the formula, and the gallon behind it decides the answer. My sedan's 5.0 L/100km is 56.50 MPG on the UK gallon and 47.04 MPG on the US gallon, both from the converter on this page. Feed the wrong one into a cost estimate and the rupees inherit the error, quietly, at full size.

The per-liter price never scared my uncle. The Rs 5,803 gap on a single run did, and that reaction changed how I present fuel costs in my family: I quote trips now, not liters, because a trip is a sum of money a person can picture spending, and a liter is not.

A useful way to hold the two cars in your head is the per-100-kilometer rate, which is just the L/100km figure wearing a price tag. The sedan costs Rs 1,896.25 for every 100 kilometers it covers. The SUV costs Rs 3,602.88. Every plan you make with these cars, a school run, an airport pickup, a second trip in the same week, is priced off that rate whether you write it down or not. Writing it down is the whole improvement.

A Month Of The Same Math

One trip makes a point. A month makes a budget, and I quote months the same way I learned to quote trips on that Lahore run: as one honest total, not a drip of small numbers nobody adds up. Take a reader version of my own pattern: a 60 kilometer round commute, 22 working days a month, which is 1,320 kilometers before any family driving enters the picture. At 5.0 L/100km that month burns 66 liters and costs Rs 25,031. At 9.5 L/100km it burns 125.4 liters and costs Rs 47,558. The gap between the two cars, Rs 22,527 a month, is a school fee, a grocery run, a real line in a household budget, produced entirely by the difference between 5.0 and 9.5 in a spec sheet.

The same math shrinks to a week without changing shape. That commute is 300 kilometers in a five-day week. The sedan burns 15 liters on it and pays Rs 5,689. The SUV burns 28.5 liters and pays Rs 10,809. A weekly gap of Rs 5,120 is small enough to ignore once and large enough, repeated fifty weeks a year, to fund the sedan's tires, insurance, and one Lahore trip besides.

Nobody budgets in liters per hundred kilometers. Everybody budgets in rupees per month, and the conversion between the two is one multiplication.

This is also where the per-100-km habit starts paying rent outside the car. Once a family thinks in cost per unit, per 100 kilometers, per kilowatt hour, per gigabyte, every utility in the house becomes comparable in the same mental currency. The same reader who costs a motorway run this way is usually the one asking what a geyser or an air conditioner does to a monthly bill, which is a unit problem of exactly the same shape.

Why The Motorway Number Flatters Both Cars

Both figures in this article are motorway figures, and the road deserves the credit it is quietly taking. A steady 110 to 120 kilometers an hour, no signals, no idling queues, a warm engine from the first kilometer to the last: the motorway is the kindest environment a petrol car ever meets. The EPA rates city and highway driving separately for exactly this reason, and its highway numbers sit well below its city numbers for the same vehicle. Whatever your car returns between Multan and Lahore, it will return more per 100 kilometers inside either city, and the first and last ten kilometers of this trip prove it every time. I pulled the city half of that comparison apart in Why The Same Car Drinks More In City Traffic.

So treat 5.0 L/100km as my sedan's best honest number, not its average one. Across a mixed month of city errands and two motorway runs, the same car settles higher, and a budget built on the motorway figure alone will run short by the third week. The fix is not pessimism. It costs one extra line: a city rate next to the motorway rate, each priced separately, each used for the driving it describes. Fuel choice argues at the same level, by the way: whether diesel repays its higher per-liter price is a break-even question in annual kilometers, and The Petrol Versus Diesel Break-Even builds that table in full.

Cost Your Own Route Before You Leave

The use case I hand this method to most often is a driver pricing an intercity trip the night before, fuel only, with a number the family can argue about productively. You need three inputs. Your route distance, from your own exits, not a search result's. Your car's rate for that kind of road, motorway rate for a motorway trip, taken from your last tank on similar roads if you keep one. And today's price per liter, checked the same week, because Pakistani fuel prices now revise often enough that last month's figure is a historical document.

Distance, times rate, times price, divided by 100. Four numbers, one line, and the argument at the dinner table changes from who feels what about petrol prices to which car takes the trip and who rides in it. That is a better argument, and it ends faster.

The same cost-per-unit reflex travels well beyond the driveway. My household now prices its electricity the same way before blaming a bill, and the home load calculator exists for exactly that reader: the one who has learned that a unit rate, honestly measured, settles arguments that totals never will.