Volvo D16
The heavy-haul option, and one of the largest displacement engines still offered on-highway. Bought for pulling rather than for economy, and it does not pretend otherwise.
Output
500-605 hp
1850-2050 lb-ft peak torque
Fuel per mile
$0.658
at 6.2 mpg and $4.049 a gallon
Fuel a year
$79,005
over 120,000 miles
In-frame overhaul
$26k-$38k
rough, and shop rates move it
In the exhaust
DPF and SCR
The first greenhouse gas phase targets the whole vehicle rather than the engine, so this era is as much about aerodynamics, tyres and axle ratios as combustion. Downspeeding becomes standard: tall gears, low cruise revs.
Known issues
Weight, thirst, and the usual aftertreatment items. Nothing unusual for its class.
Verdict
Correct for oversize, heavy haul and sustained grades. Wasteful for anything that grosses under 80,000 pounds on flat ground.
Trucks it is offered in
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