TL;DR: If you’re pointing the car south for the school holidays, the M1 does not get dearer the closer you get to the Coast. The Brisbane-side median this morning is 203.5 c/L; the Gold-Coast-side median is 203.9 — basically the same board. The real split is who’s selling, not where. The cheapest fills on the whole run are Brisbane-side discounters: Caltex Eagleby at 195.4 (cheapest of the lot), then OOM Energy Underwood and U-Go Loganholme at 197.5, EG Ampol and United Slacks Creek at 198.9, Caltex Underwood at 199.5. The dearest are big-brand servos parked near the Coast off-ramps — Ampol Foodary Helensvale 211.9, BP Oxenford North 211.5, three more at 209.9. That’s a 16.5-cent spread across the corridor. Fill before you leave Brisbane. If you’re already south and running low, skip the Ampol Foodary / BP right at the exit and find a discounter or independent a couple of minutes off the ramp — there’s still cheap fuel down south, around the high 190s to low 200s, instead of the 210-plus board at the exit.

Everyone reckons fuel gets dearer the further you drive from town, so the school-holiday plan is always “fill up before we hit the Coast.” Half right. It’s a good plan — but not because the Coast is dear. I ran the M1 corridor this morning, Eightmile Plains down to Helensvale, and the two ends price within four-tenths of a cent of each other. There’s no south gradient. What there is, is a 16-cent gap between the discounters and the big-brand highway servos — and once you know which is which, the plan makes sense for the right reason.

The two ends are the same price

First thing to get straight, because it’s the bit everyone gets wrong. The Brisbane end of the run and the Gold Coast end are not different worlds. The Brisbane-side median this morning is 203.5 c/L. The Gold-Coast-side median is 203.9. Four-tenths of a cent apart — that’s noise, not a trend. So “the Coast is expensive” isn’t the story. If you drove past a cheap Brisbane servo thinking you’d find cheaper down south, you didn’t. The medians are twins.

The story is inside each end: a wide spread between the cheap operators and the dear ones, on both sides of the Logan River.

The cheap end: Brisbane-side discounters

The genuinely cheap fills all cluster at the Brisbane end, and they’re all discounters and independents — the same pattern as every corridor I’ve mapped:

195.4 — Caltex Eagleby (cheapest on the whole run)
197.5 — OOM Energy Underwood
197.5 — U-Go Loganholme
198.9 — EG Ampol Slacks Creek
198.9 — United Slacks Creek
199.5 — Caltex Underwood

If your route runs Eightmile Plains → Underwood → Slacks Creek → Loganholme → Eagleby, you pass every one of these before you’ve properly left the metro. Fill anywhere along here and you’re in the mid-to-high 190s — a good ten cents under the corridor median, and 16 under the dearest boards down south. On a 50-litre tank that’s about $8 in your pocket for stopping five minutes earlier.

The dear end: big-brand servos near the Coast off-ramps

Now the other end. The dearest boards on the whole run are big brands, and they cluster around the Oxenford–Helensvale–Coomera off-ramps:

211.9 — Ampol Foodary Helensvale (dearest on the run)
211.5 — BP Oxenford North
209.9 — Caltex Upper Coomera
209.9 — EG Ampol Oxenford
209.9 — BP Connect Oxenford
208.9 — Ampol Yatala

These are the servos you see from the motorway — the shiny Foodary, the BP Connect right on the exit. That’s exactly why they’re dear. You’re tank-low, off the highway, not driving three suburbs deep to save a few cents, and the big brand on the ramp knows it. That’s up to 16.5 cents over Eagleby — roughly $8 a tank for the convenience of the first sign you see.

Same corridor, 16.5 cents apart

Here’s the spread laid out — the cheapest Brisbane-side discounters against the dearest big-brand servos near the Coast, with the Gold-Coast-side median in the middle so you can see the dear boards are outliers, not the whole Coast.

M1 Brisbane → Gold Coast ULP, QLD Government feed, 6 September 2026. Cheapest fills are Brisbane-side discounters (Eagleby, Loganholme); dearest are big-brand servos near the Coast off-ramps (Oxenford, Helensvale). The Gold-Coast-side median (203.9) sits well below those dear big brands — proof the pricey boards near the Coast are outliers, not the whole Coast. The gap is the operator, not the distance.

The useful nuance: the Coast isn’t dear, the big brands are

This is the bit that changes your holiday. It’s tempting to read “cheapest is Brisbane-side, dearest is Coast-side” as “fill in Brisbane or you’re stuffed.” Not true. The Gold-Coast-side median is 203.9 — eight cents under the big-brand boards on the ramp. There’s still cheap fuel down south if you dodge the pole brand: Liberty Nerang at 199.5, Liberty Helensvale at 199.9, and the Pimpama independents — Metro, Pearl and United — all at 199.5. That’s a dozen cents under the Ampol Foodary and BP boards a minute away on the same exits. You just have to walk past the big brand to find it, because the 211-ish servos you see from the motorway are the outliers, not the average.

So it isn’t “the Coast is dear.” It’s “the big-brand M1 servos are dear, up to about 212, and the discounters aren’t — the Gold-Coast-side median is only 203.9, and the cheapest of all are the Brisbane-side discounters at 195 to 199.” Distance south doesn’t set the price. The pole does.

So what for your holiday drive

Two rules and you’ve got the M1 sorted:

Fill before you leave Brisbane. Eagleby, Loganholme, Underwood, Slacks Creek — 195 to 199, and they’re right on the route before you’ve cleared the metro. This is the cheapest fuel on the whole corridor, so top up here even if you’re only three-quarters down.
If you’re already south and running low, skip the servo on the ramp. The Ampol Foodary, the BP Connect, the big brand you can see from the motorway — that’s the 209–212 board (Yatala’s a touch under at 208.9). Give it a miss and find a discounter a couple of minutes off the ramp instead — Liberty at Nerang (199.5) or Helensvale (199.9), or the Pimpama independents at 199.5: that’s the high 190s while the ramp board reads 210-plus. Two minutes off the exit saves you a tenner.

The rule underneath, same as always: cheap fuel follows the operator, not the postcode. On the M1 that means discounters over big brands, and the servo parked right at the off-ramp is the one charging 210.

Best move is to just look before you commit. Open Pinly Fuel, it shows the price at every servo along your route off the QLD Government feed, so you can fill at the cheap Brisbane-side discounter on the way down and know exactly which Coast servo to skip if you need a top-up. For the metro version of this — the cheapest strip inside Brisbane — see the Ipswich Road corridor guide. And if you’re wondering whether the off-ramp servo really gouges, I checked that too: do Brisbane off-ramp servos really gouge you?

How we measure: stations along the M1 corridor from the Brisbane southside down to the Gold Coast, QLD Government price feed, regular unleaded (ULP/91), each station’s latest reported price on the morning of 6 September 2026. “Brisbane-side” and “Gold-Coast-side” medians split the corridor at the Logan River. Prices move daily — the individual figures here are a snapshot, but the pattern (discounters cheap at the Brisbane end, big brands dear near the Coast off-ramps, cheap independents still findable down south) holds. Suburb tags come from the feed, not a surveyed access ramp, so “on the off-ramp” means the servo you’d see coming off the motorway, not a clipboard on the ramp itself.

Cheapest fuel on the M1, Brisbane to the Gold Coast