Buy a 2013 to 2018 Ram 2500 with the 6.7 Cummins. It is the best used diesel truck in Canada right now: tough, simple for a modern diesel, parts are everywhere, and it holds its value. If your budget stretches further, a 2017 or newer Duramax L5P is the best modern pick. Whatever you buy, rust matters more than kilometres, so buy on body condition and get a diesel shop inspection before money changes hands.
- The 2013 to 2018 Ram 6.7 Cummins is the best used diesel buy in Canada for most people
- Legend trucks like the LBZ Duramax, the 7.3 Powerstroke, and the 12 valve Cummins ask strong money and sell within days
- In Canada, rust kills more trucks than engines do, so buy on body condition first
- Get a pre purchase inspection at a diesel shop and be wary of deleted trucks with no paperwork
A new diesel truck in Canada is a six figure commitment now. I have seen 2026 Ram 2500s listed at ninety thousand dollars and up before tax, and Ford and GM are no kinder. That is why the used market is where the smart money goes. You can get into a proven diesel for a third of new money and end up with a truck that will outwork the new one.
I have inspected hundreds of used diesels across Alberta and Ontario. The same truths come up every time. Buy the right years, fear rust more than kilometres, and never skip the inspection. Here is my ranking of the used diesels actually worth buying in Canada right now.
1. 2013 to 2018 Ram 2500 and 3500, 6.7 Cummins: the best all round buy
This is the truck I recommend most. The 6.7 Cummins in these years is proven, the CP4 fuel pump troubles arrived later with the 2019 trucks, and parts availability is the best in the business. The 2500 runs the 68RFE automatic and rides on coil springs, so it is the nicer daily driver. The 3500 can be had with the Aisin, the transmission you want if you tow heavy for a living.
All the emissions gear is present: DPF, DEF, and EGR. That is not a deal breaker, but budget for it the way you budget for tires. On higher kilometre trucks I check the turbo actuator and the front end, and on every one I check the box sides and rockers for rust. Read the 6.7 Cummins reliability guide before you shop.
2. 2006 to 2007 GM 2500HD and 3500HD, LBZ Duramax: the legend
Ask any GM diesel guy which one to buy and most will say LBZ before you finish the question. Last Duramax from before the DPF era, 360 horsepower and 650 lb ft, backed by the Allison six speed. Simple, strong, and tunable without fighting a computer at every step.
Prices are strong because everyone knows what these are. The LBZ is far kinder on injectors than the earlier LB7, but I still check balance rates. I also check the transfer case for pump rub and every panel for rust, because salt has had its say on trucks this age. If you find a clean one with records, do not sleep on it. The good ones sell in days.
3. 2017 and newer GM 2500HD and 3500HD, L5P Duramax: the best modern used buy
If you want a newer truck, this is the one. The L5P fixed the sins of the LML before it: a Denso fuel system instead of the failure prone CP4, a stronger block, and better cooling. The Allison behind it remains the best automatic in the segment.
You pay more for an L5P truck, but you get one that still feels new inside and an engine with a clean record so far. See the Duramax L5P problems guide for what to check on higher kilometre examples.
4. 2015 to 2019 Ford F250 and F350, 6.7 Powerstroke: great truck, know the fuel system
Ford builds a great truck around this engine. Best cab in the class, strong chassis, quiet on the highway. But every one of these years runs the CP4.2 high pressure pump, the same pump I covered in what kills a CP4 pump. That pump is lubricated by the fuel itself, so dry modern diesel is its enemy.
Buy only with service records, run a lubricity additive every tank from day one, and budget for turbo and EGR upkeep as the kilometres climb. A well kept 6.7 Powerstroke is a lovely truck. A neglected one is an expensive lesson.
5. 1999 to 2003 Ford 7.3 Powerstroke and 1994 to 1998 12 valve Cummins: the antiques
For the buyer who values simple over fast. The 7.3 is slow by modern standards and loud, but it starts every morning and asks for little. The 12 valve Cummins will run on neglect and questionable fuel and still outlive the truck around it. You buy the engine and tolerate the rest.
Both are old enough that rust, not the engine, decides the price. On the 12 valve, ask whether the killer dowel pin in the timing cover has been tabbed. On the 7.3, carry a spare cam position sensor and a wrench in the glove box. That is not a joke. It is a tradition.
What to pay right now
On CarGurus Canada in early October 2026, the average asking price for a 2019 Ram 2500 sat around $41,700, a 2022 around $56,700, and a 2019 Silverado 2500HD around $37,300. Down on Kijiji, older Rams trade from under ten thousand dollars for high kilometre work trucks, like a 2008 2500HD listed at $7,999, up to the low twenties for a clean 2014 Cummins at $22,500 with 244,500 km.
The legend trucks play by their own rules. A clean LBZ, 7.3, or 12 valve asks strong money and the good ones never sit. If the price looks too good on one of those, the rust or the paperwork is the catch. There is always a catch.
The Canadian killer: rust
Here is the sentence that matters most in this whole article: in Canada, buy the body, because the engine is the easy part.
Salt takes trucks here. Ontario, Quebec, and the Maritimes eat frames, box sides, cab corners, rockers, and brake lines. I have condemned trucks with perfect engines because the frame was soft at the rear spring hangers. Alberta and BC trucks are usually cleaner underneath, and they are priced like it.
Get the truck on a hoist before you buy. If the seller will not allow it, walk. Check the frame rails, the spring hangers, the fuel and brake lines, and inside the box where the wheel wells meet the bed. Rust hides there first. And if you do buy, read the winter diesel survival guide so the truck sees spring in good shape.
Trucks I would be careful with
2008 to 2010 Ford 6.4 Powerstroke. Quick truck, fragile engine. Cracked pistons and brutal repair bills when it lets go. The purchase price is the cheapest part of owning one.
2003 to 2007 Ford 6.0 Powerstroke. Only with full bulletproofing receipts from a shop you trust. Otherwise keep walking.
2011 to 2016 Duramax LML. Good truck wrapped around the CP4.2 pump. Fine if the price reflects the risk and you run additive religiously from the first tank.
Any deleted truck with no paperwork. Returning one to stock can run into five figures. A DPF alone costs thousands before labour.
Anything the seller calls a mechanic special. It never just needs that one small thing.
My five minute lot check
Do this on the lot before you book the full inspection. It filters out most of the junk.
- Start it dead cold. A little white haze that clears is normal. Blue smoke or heavy white that hangs around is not.
- Pull the oil cap at idle and set it back on the hole. If it dances or blows off, the engine has blow by.
- Open the coolant reservoir. Oil in the coolant, or coolant that smells like exhaust, means head gasket trouble. Walk.
- Crawl under with a flashlight and poke the frame with a screwdriver at the spring hangers and behind the cab. Soft metal means no deal.
- Scan it for codes, even with no dash lights. Hidden codes tell the truth the seller will not.
- Ask for service records. A thick folder beats a good story every time.
The one thing this check cannot do is see inside the transmission or the fuel system, so pay a diesel shop for the real inspection on the truck that passes. Inspection money is the cheapest money in truck buying.
Frequently asked questions
Should I buy a used diesel truck with high kilometres?
Kilometres matter less than maintenance history. A 6.7 Cummins with 280,000 km, full service records, and a clean frame is a better buy than a 140,000 km truck with no records that spent its life on salted roads. These engines run past 400,000 km when serviced. I look at rust, cold start behaviour, and blow by long before I look at the odometer.
Is a deleted used diesel truck a good deal in Canada?
Usually not. A deleted truck can be cheaper up front, but putting the emissions equipment back on can run into five figures, and some provinces test for it. A delete with no paperwork also tells you the last owner chased power instead of maintenance. If the truck was deleted properly with receipts and a reputable tune, that is a different story, but know exactly what you are buying.
Which used diesel truck holds its value best in Canada?
The 2006 and 2007 LBZ Duramax, the 1999 to 2003 7.3 Powerstroke, and the 1994 to 1998 12 valve Cummins hold value like nothing else in the truck world. Clean ones sell within days and often ask more than trucks ten years newer. Among newer trucks, the 6.7 Cummins holds value best because buyer demand never really drops.
What is the sweet spot year range for a used Cummins in Canada?
The 2013 to 2018 Ram 2500 and 3500 with the 6.7 Cummins. You get the stronger frame and nicer interior of the fourth generation Ram, an engine with none of the CP4 worries that hit the 2019 and 2020 trucks, and huge parts availability. Expect low twenties for a high kilometre work truck and into the forties for a clean low kilometre example, based on recent Canadian listings.