Gary Witzenburg


Gary is a long-time contributor who writes about vehicles, engines and technology.

Articles by Gary Witzenburg
Supercharged Audi V-6 Excels in Power, Efficiency, Refinement
Audi’s only gasoline V-6 as of the ’13 model year powers the A6 and A7 4-door "coupe," the high-performance S4 sedan and Cabriolet and S5 coupe, as well as the Q5 and Q7 CUVs and the ’13 A8 luxury sedan. It also can be found in the VW Touareg and two Porsches.
Buick Regal GS Turbo Beats Everyone in Output 7
The 2.0L had to be a credible replacement for a much larger V-6, so a top priority was being fun-to-drive.
Infiniti M35h Hybrid Refined, Efficient, Surprisingly Fast
Most competing hybrids, including those built by Toyota and Ford, use a parallel system with two motors and a planetary gear set, which is heavier and less energy efficient.
Chrysler Pentastar V-6 Rare Blend of Versatility, Refinement
New V-6 likely will account for more than a third of the auto maker’s powertrains and contribute to about a 25% improvement in Chrysler’s overall corporate average fuel economy.
BMW's Innovative 4-Cyl. Blazes New Path for Smaller Engines
The 2.0L 4-cyl. is smooth and powerful enough to replace BMW’s iconic I-6 engines on a growing number of its up-market models. The auto maker already is designing a completely new engine family of 3-cyl., 4-cyl. and 6-cyl. engines.
Stout EcoBoost I-4 Plays Well Above Weight Class 3
Among the primary design goals was achieving the oft-quoted mantra: “Power of a V-6, fuel efficiency of an I-4.”
With Audi V-6, Who Needs a V-8?
The supercharged V-6 is nearly a half-second quicker than the previous V-8-powered S4, mainly because it has 23 lb.-ft. (31 Nm) more torque.
Chevy Volt’s Bold Blend of ICE and EV Right Strategy
“More than two-thirds of our customers are driving all electric all the time,” Voltec propulsion system chief engineer Pamela Fletcher says.
Latest Tech Creates Mighty 1.6L for Mini
For ’11, BMW upped output by adding direct injection and double VANOS to the naturally-aspirated 4-cyl., plus Valvetronic and a new twin-scroll turbocharger to the S version.
BMW’s Newest I-6 Better, Not Bigger
New N55 engine features a single, more compact, faster-responding twin-scroll turbocharger that replaces the N54’s twin turbos.
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