Bottom Line Up Front
The 6.4‑L and 6.7‑L Power Stroke are the two diesel options you’ll find in recent Ford Super Duty trucks, and the newer 6.7 L simply outscores the older 6.4 L in power, fuel economy and overall value.
6.4 vs 6.7 Power Stroke Diesel Engines – Specs, Mileage & Price
Image: 6.4 vs 6.7 Power Stroke Diesel Engines – Specs, Mileage & Price – Performance Comparison and Specifications
Design & Looks
Both engines sit under the same massive hood, but the 6.7 L got a few visual upgrades. The later model features a larger intercooler and a more robust exhaust manifold, which give the front a slightly bulkier appearance. Inside the engine bay you’ll notice sturdier mounting brackets – a hint that Ford expected the 6.7 L to handle higher torque for longer.
Performance & Mileage
The 6.4 L Power Stroke, introduced in 2008, makes about 300 hp and 660 lb‑ft of torque. It delivers roughly 15 mpg combined in a 2500 lb truck. The 6.7 L, launched in 2011, starts at 330 hp and the same 660 lb‑ft, but newer tunes push it up to 475 hp and 1,050 lb‑ft in the highest trim. Despite the extra power, the larger engine actually drinks a bit less fuel – about 16‑17 mpg combined – thanks to improved turbocharging and an upgraded fuel system.
Price & Rivals
When new, the 6.4 L version started around $35,000. Today a used 6.4 L Super Duty typically sells for $25‑30 k depending on mileage. The 6.7 L entered the market at about $38,000 and still commands a premium; new models hover near $45,000, while lightly used units are $35‑40 k.
Compared with rivals, the 6.7 L beats Chevrolet’s 6.6 L Duramax on torque and often on price, while the older 6.4 L falls behind both in power but can still be a cost‑effective choice for buyers who don’t need the newest specs.
Quick Comparison Table
| Engine | Mileage (mpg) | Price (USD) | Top Features |
|---|---|---|---|
| 6.4 L Power Stroke (2008‑2010) | 15 (combined) | $35,000 (new) / $25‑30k (used) |
|
| 6.7 L Power Stroke (2011‑present) | 16‑17 (combined) | $38,000 (new) / $35‑40k (used) |
|
FAQ
What is the mileage of the 6.7 Power Stroke?
Expect about 16‑17 mpg combined in a typical Super Duty pickup.
Is the 6.4 Power Stroke still worth buying?
If you need a reliable work truck on a tighter budget, the 6.4 L can still be a solid choice, especially in low‑mileage used models.
How much does a Super Duty with a 6.7 Power Stroke cost?
Newer models start near $45,000, while recent used examples range from $35,000 to $40,000 depending on trim and condition.
What do you think? Share your experience with either engine in the comments below.
Source: Read Official News
