Under a new multi-year agreement, Navistar Engine Group will supply its advanced V8 turbo diesel engine to Tiffin Motorhomes. Beginning in June, MaxxForce 7 engines, manufactured in Huntsville, Alabama, will power Tiffin's new Allegro Breeze RV, manufactured in Red Bay, Alabama.

"We're always looking for new ways to offer more value to our customers, and we've done it again with this new high-end, smaller coach," said Bob Tiffin, CEO of family-owned Tiffin. "The Allegro Breeze is wonderfully maneuverable, easy to park and fun to drive thanks to one of the most powerful, durable and fuel-efficient engines on the market."

The V8 diesel pushers will be fully compliant with applicable EPA emissions standards. Tiffin will use 6.4-liter MaxxForce 7 engines rated at 215 horsepower and 560 lb.-ft. torque.

"MaxxForce engines fit perfectly with Tiffin's reputation of providing high value and low cost of ownership, while introducing innovative products," said Eric Tech, president, Navistar Engine Group. "We're proud to add another industry leader of U.S.-built motorhomes to our list of partners."

This past November, a concept model Allegro Breeze RV was introduced to dealers and news media at the annual Recreational Vehicle Industry Association's 47th Annual National RV Trade Show in Louisville, Kentucky, and was awarded "Best in Show". At 28 feet, the Allegro Breeze RV is 17 feet shorter than Tiffin's top-of-the-line Zephyr RV, but only 9.5 feet longer than a typical full-size SUV. The Allegro Breeze GVWR is 21,500 lbs. The Allegro Breeze RV will begin appearing at Tiffin's network of dealerships in the U.S. and Canada in June 2010. Pricing has not yet been announced.

The MaxxForce 7 will be rear-mounted on Tiffin's own PowerGlide chassis. Introduced in 2008, the PowerGlide chassis quickly became a popular option, offering one-stop service for Tiffin owners at dealerships and the Tiffin service facility. The PowerGlide chassis for the Allegro Breeze RV is newly designed on a coach-ready platform.

Tiffin Motorhomes received one of three prestigious Quality Circle Awards presented by the Recreational Vehicle Dealers Association to Class A motorhome manufacturers this year for design, reliability, quality, value and competitive price. For additional information about Tiffin products and services, visit www.tiffinmotorhomes.com.

Navistar Engine Group, an operating unit of Navistar Inc., produces diesel engines for consumer and commercial automotive and industrial markets around the world. Its global MaxxForce brand line of engines offers models for a wide range of applications and for all global emissions standards. For more information CLICK HERE.

To read all about the Allegro Breeze CLICK HERE.

Navistar, based in Warrenville, Illinois, makes International brand commercial trucks, IC Bus branded school and commercial buses, MaxxForce brand diesel engines, Monaco brand RVs and Workhorse brand chassis for motor homes and step vans.

Speaking at the Reuters Manufacturing and Transportation Summit in Chicago, CEO Daniel Ustian said Navistar's RV making unit, created when it purchased the assets of bankrupt motorhome maker Monaco Coach last year, was already operating at a break-even level in what he characterized as the worst of times.

He said it was already a "$400 million, $500 million" a year business for Navistar but he could see it tripling in size as the RV market recovers.

"We believe it will get to be a $1.5 billion business," he said.

Among the markets in which he sees growth is South America, where commercial buses built on Monaco's one-piece bodies could help Navistar make good on its goal of becoming a player in the global commercial bus market.

And Ustian said he believes there is a growing RV in market in places like China, with its burgeoning middle class and sprawling new highway system.

"They have small RVs there now," he said. "they're pretty sparse. So I think ... there's an opportunity."

Navistar stock is publically traded on the NYSE.

EDITORS NOTE: Being gear-heads ourselves here at RV Buddies makes this news on the W20D very exciting to us. It's also wonderful to see additional supporting materials that support the reason for us naming the Four Winds Serrano built on the W20 platform as one of the best of show at Hershey earlier this year. Here is the low-down from their research:

Diesel Engine’s Torque and Quietness also Provide Great New Choice for Class A Motor Homes

The Workhorse 20D/22D front-engine diesel chassis with its MaxxForce 7 engine has taken a big leap in improving motor home fuel economy while providing outstanding torque for Class A motor homes along with the quietest V8 diesel engine you might ever drive.

Independent tests at Bosch Proving Grounds in South Bend, Ind., had this chassis-engine match-up achieving up to 13.2 mpg, an almost unheard of figure for a Class A motor home. The tests were conducted with a 32-foot Four Winds Serrano coach body and loaded to the maximum GVWR of 20,500 lbs. The Serrano has been drawing heavy consumer interest throughout 2009 and was named a “Best of Show” at the September Pennsylvania RV and Camping Show by RVbuddiesonline.com. The W20D chassis and MaxxForce 7 engine are both on display at the National RV Trade Show in Louisville this week along with the Serrano.

Proven, Reliable Engine

The latest version of the MaxxForce 7, V8 tuned for motor homes generates 230 horsepower and 620 lb.-ft. of torque. “This high volume, rugged mid-range diesel engine is the heart of many International medium duty trucks. Now it is making its mark in the RV industry,” said Tony Monda, Workhorse RV vice president of marketing. “Coupled with the six speed Allison transmission, our W20D and W22D front engine diesel platforms do not sacrifice power and performance in order to achieve better fuel economy.

“These platforms have incredible grade ability and pulling power. Our proprietary RV consumer research indicated that class A potential buyers still want power and performance — but they are also demanding better fuel economy and that is what the new W Series delivers. Our strategy is to continue to integrate MaxxForce engines into Workhorse products where applicable, creating synergies with Navistar along with true market differentiation.”

Quietest Diesel V8

Drivers will also immediately notice that MaxxForce 7 is quiet. The noise level measured at 68.9 dBA in a low idle test. A high-pressure common rail fuel system, piezo actuated fuel injectors and a block and head design with a single-piece nodular iron bedplate are among the features that contribute to reduced noise and vibrations, a key to the MaxxForce 7’s front-engine application.

Popular with RVers

Presently, the Serrano coach from Four Winds International exclusively uses the W20D for both its 31Z single slide out and 31V double slide out models. Four Winds Director of Marketing Jon Krider said dealerships with the product find that “They’re seeing consumers that traditionally look at diesel pushers and longer coaches. These customers are finding many features with the coach and chassis that they like, starting with things like storage and the whole aerodynamic look and contemporary feel of the coach. So instead of spending $200,000 to $300,000 for a bigger coach, they can get a lot of what they want at a much lower price.”

Regarding the W20D and Serrano matchup, Krider said, “retail customers comment on how quiet the cockpit is for having a diesel engine under right under their feet. We get a lot of comments about just how well the coach drives because of the 50 degree turning radius and being able turn a short coach around in a tight area. And we get many good comments about the overall stability of the coach moving down the road.”

High Performance Technology

The series sequential EVRT turbocharger provides exceptional response over a wide range of engine speeds for impressive acceleration, grade climbing, towing capability and high altitude performance. The turbo is tuned to improve fuel economy while also making the vehicle very responsive to the driver. The MaxxForce 7 also provides unaided cold-starting performance from -20° F within four seconds. Routine maintenance is economical, with oil changes every 10,000 miles.

Why did RV Buddies name the Serrano 31V one of our “Best of Show” at the PRVCA in Hershey this year?”  Because it offers style, storage, floor plans and diesel fuel economy at an affordable price - a great combination in a nicely sized package!

At first glance, the Serrano has a very unique front cap – smooth, curved and aerodynamic with its attractive one-piece windshield. But glancing around the sides of the coach reveals that the curving theme continues. Yes, the side walls arch at the top of the roof-line as well. This is one wind-cutting coach!

RV Buddies looked at the 31V, one of two available layouts. Both coaches are 8' wide. If you're used to driving a wide-body, driving the narrower Serrano should be a breeze. The 31V has two slides while the 31Z has one large slide.

The full-body paint on the slick fiberglass continues the polished theme of the exterior. The three available color schemes are attractive and stylish. The European bus-style rear view mirrors further set the front end design apart. There's no other way to describe them than "really cool".

Beyond all the normal storage compartments, look closely at the rear quarters of either model. There are two large doors that reveal what is aptly called "Mega" storage. Accessible from both sides of the coach, there is more than enough room for every camping need – think grills, bicycles and other large items.

Underneath the coach lies a solid foundation in the Workhorse W20D chassis. Key components include disc brakes with ABS, the MaxxForce 7 V-8 diesel with 620 lb ft of torque, an Allison transmission, 50 degree wheel cut, Bilstein shocks and 19.5" tires and wheels.

Supplying power is a standard 6000 watt Cummins-Onan diesel generator with 50 amp shore service. Also of note are the heated and enclosed holding tanks.

Given the good looks and quality mechanicals, is it possible for the interior to live up to expectations? Stepping inside is not disappointing.

Both floor plans provide an upscale vinyl flooring which makes for practical camping, while the living, cab and rear bedroom are carpeted. Hopefully whatever dirt gets tracked in will have fallen away before settling onto carpeting. Although the 31V is just shy of 33', the interior feels much larger.

Entering amidships, the spacious feel is amazing. With the shorter exterior height, 80" ceilings don't seem possible. By the way, they are padded vinyl with a ducted air conditioning system.

The interior is well appointed. The cabinetry carries the European curve theme throughout in a very tasteful manner. Fabrics and colors are muted and promise not to go out of style the moment next year's models are introduced. The wood is available in maple or optional cherry finishes.

The coach radiates fore and aft from a central kitchen – the hub of most family environments.  Counters are solid surface with a large sink and glass-covered two burner gas range. A convection/microwave resides above with range hood built in. A simple tile treatment breaks up the solid surface from the wall giving an upscale feeling. It is subtle and unexpected in a coach of this price range. The right section of the counter pulls out with its drawers and additional counter top being revealed. The Serrano has more counter space than many larger coaches. Making real meals in this RV should be both easy and enjoyable. Completing the kitchen is a full height pantry and double-door refrigerator.

Forward of the galley are an opposing sofa-bed and "U" shaped dinette – both in leather.  The arrangement is both functional and social.  Six full-sized adults can be seated for conversation and refreshments in this living area.

Up front, two very comfortable captain's chairs, in leather to match the sofa and dinette, face a simple and functional dashboard. RV dashes vary from flat surfaces that look assembled in a neighbor's garage to aircraft cockpits, which require training to operate. The Serrano is neither of those. It is a combination of simple curves, easy to read gauges and readily accessible switches. The center stack is also clean with optional rear camera monitor and a fully-featured RV radio. Then in front of the passenger is a pull-out computer tray for doing email or navigating as co-pilot. There are also plenty of air conditioning ducts.

At first glance, the dash lacks flash and appears really simple. After living with it, it is clear that this flows with the rest of the coach – form following function – like a fine car would provide.

With the Captains' seats turned around, they join the sofa and dinette area to create a very spacious living space. In the 31V, the standard HDTV is a 32" model in a cabinet across from the kitchen that is easily viewed by all at eye level. It is pre-wired for an optional satellite dish.

Moving toward the back past the kitchen there is a full size wardrobe on the driver's side. Opposite is an entry to the self-contained bath which is located on the passenger side.  The bath has ample counter space, a ceramic toilet and full-size shower with skylight for an open feeling as well as extra light. One very unique feature is included in the bathroom mirror. Part of the reflective surface is etched away at the top so that a light can be placed directly behind it. This makes for very even illumination while using the mirror. It's also an upscale touch you would not expect in a coach at this price range. (Typically two-way mirrors hide TVs while protecting them from moisture in the bathrooms of expensive custom coaches.)

Finally, at the rear of the Serrano is a private bedroom with a queen-size bed. The design makes it look like it floats on a platform. What the two step-ups also do, however, is create the space for the "Mega" exterior storage area underneath outside. A wardrobe is in either corner, and the back wall above the headboard is covered with a mirror. It features the same treatment as the bathroom mirror for a low light in the bedroom late at night. There are also individual reading lamps for both sides of the bed.

As mentioned earlier, options are few. Leather, full body paint and a diesel generator are standard making this a fully equipped coach to begin with. A few of the key options include: Sirius radio, power driver's seat, HD satellite dish, home theater system, outdoor entertainment system and a bedroom television.

At just under 33' in length and 8' wide, the Serrano 31V goes where larger coaches just can't go. At the same time, it offers style, storage and diesel at an affordable price. That's why RV Buddies named it one of the "Best of Show" coaches in Hershey this year.