Diesel & Powerstroke

Ford 6.0 vs 6.7 Powerstroke: Which Diesel Costs Less to Own

Published January 28, 2026 · Back On The Road Automobile Repair Inc. · Grover Beach, CA

Shoppers looking at a used Ford Super Duty diesel almost always run into the same question eventually: is the older 6.0 Powerstroke a better buy because it costs less upfront, or does the newer 6.7 Powerstroke save money in the long run despite a higher purchase price? There is no single right answer for every buyer, but there is a clear-eyed way to think through it, and it starts with understanding what each engine is actually like to own over time rather than just comparing sticker prices.

The 6.0 Powerstroke: Lower Purchase Price, Known Weak Points

The 6.0 Powerstroke ran in Ford Super Duty trucks from 2003 through 2007, and its biggest appeal today is purchase price. These trucks have been on the road long enough that a well-sorted example, meaning one that has already had its known weak points addressed, can be a genuinely good value. The issue is that "well-sorted" is doing a lot of work in that sentence. Head gaskets, EGR coolers, and the fuel injection control module (FICM) are the three repairs that come up again and again with this engine, and if a truck has not had any of that work done yet, a buyer should expect to budget for it.

The flip side is that a 6.0 Powerstroke that has already had head studs, an upgraded EGR cooler, and FICM attention can be a genuinely reliable, lower-cost diesel to own from that point forward. The expensive work has already been paid for by someone else, and the truck is on the other side of its biggest reliability risks. This is one reason maintenance records matter so much when shopping for one of these trucks specifically.

The 6.7 Powerstroke: Higher Purchase Price, Different Risk Profile

Ford introduced the 6.7 Powerstroke in 2011, replacing the 6.4 (which had its own, different set of issues) and moving to a compacted graphite iron block design that is notably stronger than the 6.0's. The 6.7 does not share the 6.0's head gasket reputation, and it has generally proven to be a more durable platform overall. That durability comes at a price, though, both in higher purchase cost for a comparable truck and in more complex emissions equipment. The 6.7 uses a diesel particulate filter and diesel exhaust fluid (DEF) system that the 6.0 never had to deal with, and when those systems need attention, the parts and labor are not inexpensive.

Car and Driver and Edmunds have both covered the broader shift toward emissions-heavy diesel systems across the truck industry, and the tradeoff is consistent across brands: cleaner-running, generally more durable engines that bring more complex (and sometimes more expensive) emissions hardware along with them.

Comparing Real Costs Over Time

When owners and shops talk informally about "cost of ownership" for these two engines, a few patterns tend to hold up. A 6.0 Powerstroke with no history of head gasket or EGR work is a bigger financial unknown; a buyer should assume that work is coming and price it into the deal, even if the truck runs fine today. A 6.0 with documented upgrade work already done can be a genuinely economical diesel truck, since the expensive problems are behind it. A 6.7 Powerstroke tends to have fewer catastrophic engine-internals failures, but DPF regeneration issues, DEF system faults, and turbo or injector work on a high-mileage 6.7 are not cheap repairs either. Neither engine is "worry-free," and anyone buying either one should plan for diesel-specific maintenance costs that a gas truck simply does not have.

Fuel economy is a smaller factor than most buyers expect, since both engines are closer in real-world mileage than the marketing from their respective eras suggested. The bigger cost driver, in practice, is unplanned repair work, which is exactly why a pre-purchase inspection from a shop that knows these engines well is worth the cost before buying either one.

What a Pre-Purchase Inspection Should Cover

For a 6.0, that means a cooling system pressure test, a check of coolant for exhaust gas contamination, a look at FICM connector corrosion (a very common and often underestimated failure point), and a general inspection of the EGR cooler and oil cooler. For a 6.7, that means checking DPF and DEF system history, looking for stored codes related to regeneration cycles, and inspecting the turbo and injectors for signs of wear consistent with the truck's mileage and use. Kelley Blue Book and Edmunds both publish general guidance on pre-purchase inspections for used trucks, and a diesel-specific inspection from a shop that actually works on these engines every week goes further than a generic used-car checklist.

Which One Makes Sense for a Five Cities Driver

For someone who tows occasionally around Grover Beach, Arroyo Grande, and Pismo Beach, either engine can work well as long as the buyer goes in with realistic expectations and a real inspection rather than a guess. A budget-focused buyer who is comfortable doing some research into a specific truck's maintenance history can do well with a well-sorted 6.0. A buyer who wants fewer surprises and is willing to pay more upfront, and to budget for DPF and DEF system maintenance down the road, is often better served by a 6.7.

Back On The Road Automobile Repair Inc. at 410 Leoni Dr #1 in Grover Beach works on both generations of Powerstroke diesel as part of its diesel and Ford specialty. The shop's factory-trained Ford master technicians can perform a pre-purchase inspection on either engine, or diagnose an existing truck's symptoms, Monday through Friday from 8:00 AM to 5:00 PM.