Gary Witzenburg


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

Articles by Gary Witzenburg
BMW 3.0L Diesel Smooth, Powerful, ‘Remarkable’
BMW diesel engine chief Peter Nefischer says the N57's top design priorities were efficiency, compact packaging, low emissions and the best possible power-to-weight ratio.
New GM V-8 Proves Pushrods Still Rock
The 6.2L LT1 is physically smaller and lighter than a twin-turbo 4.4L V-8, but it makes more power and torque with better fuel efficiency.
BMW’s Iconic I-6 Evolves But Does Not Change
The toughest non-technical challenge was convincing people inside the company the single-turbo/Valvetronic concept was better than the N54's twin turbochargers.
Ford 4-Cyl. EcoBoost Powerful, Versatile and Efficient 2
One of the development team's toughest challenges was meeting the engine's demanding performance requirements with regular fuel instead of premium.
Chrysler V-6 Shines in Both Cars and Trucks
While direct injection frequently is referred to as the wave of the future, the Pentastar’s chief engineer says new particulate emissions standards will have auto makers shifting back to port injection.
Audi V-6 Remains Industry Benchmark
The supercharged V-6 is notable not only for its refinement and efficiency but also for its versatility, powering everything from compacts to big CUVs.
Thrifty Honda V-6 Marries Two Technologies, Spurns Another
Despite 278 eager horses, editors logged 29.4 mpg – well above its 25-mpg combined rating. In an era when many auto makers are being hammered for not coming close to their official fuel-economy ratings, this is exceptional.
GM 4-Cyl. Trumps BMW and Ford in Power 4
This new specific-output leader is more efficient and refined.
BMW 4-Cyl. Techy, Torquey and Efficient
Advanced technology, strong low-rpm torque and a superb 8-speed transmission make BMW’s turbo 4-cyl. a winner for the second year in a row.
Dreamy Technology Makes New Honda 4-Cyl. Stand Out
This new 2.4L 4-cyl. is the first production beneficiary of "Earth Dreams” technology, Honda's whimsical name for a set of next-generation advancements aimed at improving performance and efficiency.
How Ford Designed a Brute That Doesn’t Guzzle
The development team set out with four clear-cut goals: 650 hp, 600 lb-ft. of torque, 200-mph top speed and no gas-guzzler tax.
High-Revving Subaru Boxer Engine Is Crowd Pleaser
The good news is there already is a turbo version. The bad news is it won’t fit in the Subaru BRZ and Scion FR-S.
How Mazda's Skyactiv Fuel-Efficiency Technology Works
The combustion research that led to Mazda’s 13:1 compression ratio on 87-octane gas goes back about 10 years, long before there was a Skyactiv program.
Meet the New Boss
Ford’s Boss 302 is remarkable because it achieves its prodigious output without forced induction and is a surprisingly pleasant daily driver.
The Ultimate Combustion Machine
The industry has moved to V-6s but BMW still believes its iconic I-6 design is the engine of the future.
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