2026 Tiffin Diesel Motorhomes for Sale | La Mesa RV | La Mesa RV

2026 Tiffin Diesel Motorhomes

Luxury Travel, Built Around the Way You Want to Live

Explore 2026 Tiffin diesel motorhomes at La Mesa RV, including the Allegro Bay, Phaeton, Allegro Bus and Zephyr. Compare luxury diesel coaches, floorplans, performance, features and available inventory to find the Tiffin that fits the way you want to travel.

View Tiffin Inventory Compare Tiffin Models

35'7"–45'

A Range of Coach Sizes

360–605 HP

Cummins Diesel Power

Up to 20,000 lb

Available Towing Capability

Sleeps Up to 8

Room for Family & Guests

Specifications shown represent capabilities across the 2026 Tiffin diesel lineup and vary by model, floorplan, chassis, furniture configuration, equipment and options.

The Tiffin Difference

50 Years of Craft, Built for a Lifetime of Journeys

For generations, Tiffin has built motorhomes around a simple idea: the journey should feel as rewarding as the destination. That philosophy comes to life through thoughtful design, residential comfort, and craftsmanship created for the way you actually travel.

The Allegro Bay, Phaeton, Allegro Bus, and Zephyr carry that philosophy forward in four distinct ways — from the versatility of a diesel Super C to refined residential comfort and Tiffin’s most elevated flagship experience.

Four distinctive diesel motorhomes. One unmistakable Tiffin experience.

TIFFIN × LA MESA RV

Two Names,
Trusted Across Generations.

Tiffin has spent generations building motorhomes around craftsmanship, comfort, and the people who travel in them. La Mesa RV brings decades of experience helping owners find the right coach and supporting the journey that follows.

A shared commitment to making every mile feel considered.

Choose Your Tiffin

Compare 2026 Tiffin Diesel Motorhomes

From Super C versatility to residential diesel-pusher comfort and flagship refinement, explore the Tiffin that best fits the way you want to travel.

Super C

Tiffin Diesel Super C

Allegro Bay

Super C Capability

Diesel capability with residential comfort.

The Allegro Bay blends the confidence of a front-engine diesel Super C with the craftsmanship, comfort, and thoughtful living spaces expected from Tiffin.

Cummins diesel performance

Freightliner S2RV chassis

Three distinct floorplans

Residential Tiffin comfort

Explore Allegro Bay

Tiffin Diesel Luxury

Phaeton

Refined Luxury

Residential comfort, thoughtfully balanced.

The Phaeton brings together Tiffin craftsmanship, thoughtful design, and everyday livability for travelers who want luxury to feel comfortable and approachable.

Residential-inspired comfort

Flexible floorplan choices

Thoughtful interior design

Diesel-powered confidence

Explore Phaeton

Tiffin Diesel Luxury

Allegro Bus

Elevated Luxury

More space, capability, and refinement.

The Allegro Bus takes the Tiffin experience further with expansive living spaces, premium appointments, and thoughtful layouts designed for travelers who want fewer compromises.

Expansive living spaces

Premium interior appointments

Generous storage and flexibility

Elevated travel comfort

Explore Allegro Bus

2026 Tiffin Zephyr luxury diesel motorhome

Flagship

Tiffin Flagship Luxury

Zephyr

Flagship Refinement

The fullest expression of the Tiffin experience.

The Zephyr brings craftsmanship, comfort, technology, and road-going confidence together for travelers seeking Tiffin’s most elevated diesel motorhome experience.

Flagship craftsmanship

Spacious residential living

Premium driving experience

Tiffin’s highest level of refinement

Explore Zephyr

Not sure which Tiffin fits your travel style? Compare the floorplans, features, and specifications below.

Designed Around How You Travel

Thoughtful Spaces for Living, Hosting, and Relaxing

From quiet mornings to evenings with family and friends, Tiffin diesel coaches are designed to make time on the road feel comfortable, intuitive, and distinctly your own.

Live Comfortably

Room to settle in and feel at home

Residential-inspired living spaces give you room to unwind, move comfortably, and enjoy longer stays without feeling like you are simply passing through.

Host Naturally

Made for the moments you share

Thoughtful seating, inviting gathering spaces, and well-planned kitchens make it easier to share meals, conversation, and the journey with the people who matter.

Travel Your Way

Comfort that adapts to the journey

Flexible layouts, purposeful storage, and private spaces help your coach adapt to weekends away, extended travel, and everything in between.

Tiffin motorhome interior showcasing residential craftsmanship and design

Crafted With Intention

Sophisticated Design Without Sacrificing Function

Across the Allegro Bay, Phaeton, Allegro Bus, and Zephyr, Tiffin carries a consistent focus on thoughtful design, residential comfort, and craftsmanship created to make everyday travel feel more refined.

Residential-Inspired Finishes

Materials, textures, and finishes are thoughtfully combined to create interiors that feel warm, cohesive, and comfortable for extended travel.

Thoughtful Cabinetry

Integrated cabinetry and purposeful storage help make better use of the interior while preserving the clean, considered look that defines a Tiffin coach.

Purposeful Lighting

Layered lighting helps create an inviting atmosphere while supporting everything from relaxing at the end of the day to cooking, entertaining, and everyday living.

Details Designed for Everyday Living

From a more versatile Super C footprint to expansive flagship living spaces, thoughtful design helps balance appearance, storage, durability, and everyday usability.

Explore Interior Design

Interior Design & Materials

Designed to Feel Cohesive From Every Angle

Explore complete interior combinations, upholstery, cabinetry, countertops, flooring, and finishes that give Tiffin diesel coaches their polished, residential feel.

Tiffin luxury diesel motorhome complete interior

Interior materials, colors, and finishes may vary by model, floorplan, and individual coach. Confirm all selections on the specific vehicle.

Compare Tiffin Diesel Coaches

Find the Tiffin That Fits the Way You Travel

Compare key dimensions, capacity, power, storage, and layout characteristics across the 2026 Allegro Bay, Phaeton, Allegro Bus, and Zephyr lineup.

Request Complete Specifications

Allegro Bay Phaeton Allegro Bus Zephyr

Allegro Bay

38 AB

39' 4"

A triple-slide Super C with a split-bath layout, generous basement storage, and room for extended travel.

Power

360 HP

Sleeps

4–6

GVWR

33,000 lb

Storage

136 cu. ft.

Allegro Bay

38 BB

39' 4"

A bath-and-a-half, triple-slide layout that adds privacy and convenience for longer trips.

Power

360 HP

Sleeps

3–5

GVWR

33,000 lb

Storage

114 cu. ft.

Allegro Bay

34 DB

35' 7"

The shortest Allegro Bay, pairing a dual-slide mid-bath layout with the same 360-horsepower Super C platform.

Power

360 HP

Sleeps

3–4

GVWR

33,000 lb

Storage

93 cu. ft.

Swipe to compare specifications ↔

Specification	38 AB	38 BB	34 DB
Engine	Cummins B6.7 · 360 HP / 800 lb-ft	Cummins B6.7 · 360 HP / 800 lb-ft	Cummins B6.7 · 360 HP / 800 lb-ft
Chassis	Freightliner S2RV	Freightliner S2RV	Freightliner S2RV
Overall Length	39' 4"	39' 4"	35' 7"
Approx. Square Footage	310 sq. ft.	315 sq. ft.	250 sq. ft.
Bathroom Layout	Split bath	Bath & a half	Mid bath
Sleeping Capacity	4–6	3–5	3–4
Slideouts	3	3	2
Fuel Capacity	100 gal.	100 gal.	100 gal.
Fresh Water	150 gal.	150 gal.	150 gal.
Gray Water	70 gal.	70 gal.	70 gal.
Black Water	45 gal.	45 gal.	45 gal.
GVWR	33,000 lb	33,000 lb	33,000 lb
GCWR	45,000 lb	45,000 lb	45,000 lb
Hitch Rating	12,000 lb	12,000 lb	12,000 lb
Basement Storage	136 cu. ft.	114 cu. ft.	93 cu. ft.

Phaeton

35 CH

37' 9"

The shortest Phaeton, pairing a rear-bath layout with residential comfort and three slide-outs.

Power

450 HP

Sleeps

2–4

GVWR

40,000 lb

Storage

131 cu. ft.

Phaeton

37 BH

38' 2"

A bath-and-a-half Phaeton with three slide-outs and more basement storage for extended travel.

Power

450 HP

Sleeps

2–6

GVWR

40,000 lb

Storage

162 cu. ft.

Phaeton

40 IH

41' 4"

A quad-slide, bath-and-a-half layout with significantly more living and basement storage space.

Power

450 HP

Sleeps

2–6

GVWR

40,000 lb

Storage

232 cu. ft.

Phaeton

44 OH

45'

The largest Phaeton, combining four slide-outs with a bath-and-a-half layout and walk-in closet.

Power

450 HP

Sleeps

2–8

GVWR

46,000 lb

Storage

232 cu. ft.

Swipe to compare specifications ↔

Specification	35 CH	37 BH	40 IH	44 OH
Engine	Cummins L9 · 450 HP	Cummins L9 · 450 HP	Cummins L9 · 450 HP	Cummins L9 · 450 HP
Overall Length	37' 9"	38' 2"	41' 4"	45'
Approx. Square Footage	375 sq. ft.	375 sq. ft.	405 sq. ft.	440 sq. ft.
Bathroom Layout	Rear full bath	Bath & a half	Bath & a half	Bath & a half
Sleeping Capacity	2–4	2–6	2–6	2–8
Slideouts	3	3	4	4
Fuel Capacity	100 gal.	100 gal.	100 gal.	100 gal.
Fresh Water	100 gal.	100 gal.	100 gal.	100 gal.
Gray Water	100 gal.	100 gal.	100 gal.	100 gal.
Black Water	55 gal.	55 gal.	55 gal.	55 gal.
GVWR	40,000 lb	40,000 lb	40,000 lb	46,000 lb
GCWR	50,000 lb	50,000 lb	50,000 lb	56,000 lb
Basement Storage	131 cu. ft.	162 cu. ft.	232 cu. ft.	232 cu. ft.

Allegro Bus

36 AP

38' 2"

Allegro Bus craftsmanship and residential comfort in the shortest layout in the lineup.

Power

450 HP

Sleeps

2–3

GVWR

42,000 lb

Storage

154 cu. ft.

Allegro Bus

40 IP

41'

A bath-and-a-half, quad-slide floorplan balancing generous living space with a 41-foot length.

Power

450 HP

Sleeps

2–4

GVWR

42,000 lb

Storage

229 cu. ft.

Allegro Bus

45 BP

45'

Two full bathrooms and mid-coach bunks make this the most flexible Allegro Bus for family and guests.

Power

450–605 HP

Sleeps

2–8

GVWR

52,000 lb

Storage

257 cu. ft.

Allegro Bus

45 OPP

45'

An expansive bath-and-a-half floorplan with a walk-in closet and maximum basement storage.

Power

450–605 HP

Sleeps

2–6

GVWR

52,000 lb

Storage

257 cu. ft.

Swipe to compare specifications ↔

Specification	36 AP	40 IP	45 BP	45 OPP
Engine	Cummins L9 · 450 HP	Cummins L9 · 450 HP	Cummins L9 · 450 HP 605 HP X15 optional	Cummins L9 · 450 HP 605 HP X15 optional
Overall Length	38' 2"	41'	45'	45'
Approx. Square Footage	365 sq. ft.	405 sq. ft.	440 sq. ft.	440 sq. ft.
Bathroom Layout	Pass-through full bath	Bath & a half	Two full baths	Bath & a half
Sleeping Capacity	2–3	2–4	2–8	2–6
Slideouts	4	4	4	4
Fuel Capacity	150 gal.	150 gal.	150 gal.	150 gal.
Fresh Water	100 gal.	100 gal.	100 gal.	100 gal.
Gray Water	100 gal.	100 gal.	100 gal.	100 gal.
Black Water	55 gal.	55 gal.	55 gal.	55 gal.
GVWR	42,000 lb	42,000 lb	52,000 lb	52,000 lb
GCWR	52,000 lb	52,000 lb	67,000 lb	67,000 lb
Basement Storage	154 cu. ft.	229 cu. ft.	257 cu. ft.	257 cu. ft.

Zephyr

45 FZ

45'

A 45-foot bath-and-a-half Zephyr built around expansive residential living and Tiffin's highest level of refinement.

Power

605 HP

Sleeps

3–5

GVWR

54,000 lb

Storage

237 cu. ft.

Zephyr

45 PZ

45'

A 45-foot bath-and-a-half Zephyr with a walk-in closet, generous storage, and a private residential-style retreat.

Power

605 HP

Sleeps

3–5

GVWR

54,000 lb

Storage

237 cu. ft.

Swipe to compare specifications ↔

Specification	45 FZ	45 PZ
Engine	Cummins X15 · 605 HP	Cummins X15 · 605 HP
Torque	1,950 lb-ft	1,950 lb-ft
Chassis	PowerGlide SL Raised Rail	PowerGlide SL Raised Rail
Overall Length	45'	45'
Approx. Square Footage	440 sq. ft.	440 sq. ft.
Bathroom Layout	Bath & a half	Bath & a half
Sleeping Capacity	3–5	3–5
Fuel Capacity	150 gal.	150 gal.
Fresh Water	100 gal.	100 gal.
Gray Water	100 gal.	100 gal.
Black Water	55 gal.	55 gal.
GVWR	54,000 lb	54,000 lb
GCWR	74,000 lb	74,000 lb
Hitch Rating	20,000 lb	20,000 lb
Basement Storage	237 cu. ft.	237 cu. ft.

Need help deciding between Tiffin floorplans?

Our team can help you compare model families, available equipment, floorplans, and individual inventory.

View Available Inventory Need Help Choosing?

Specifications shown are based on Tiffin Motorhomes' published 2026 information and may vary by chassis, equipment, furniture configuration, options, and individual coach. Sleeping capacities depend on furniture and dinette configuration. Confirm all specifications on the specific vehicle before purchase.

Tiffin luxury diesel motorhome traveling on the road

Built for the Road Ahead

Luxury Should Feel Just as Good in Motion.

Driving Confidence

Confidence You Can Feel From the Driver’s Seat

From the front-engine Allegro Bay Super C to the Phaeton, Allegro Bus, and flagship Zephyr diesel pushers, Tiffin combines capable diesel power, purpose-built chassis engineering, and long-distance comfort to help every mile feel more composed.

Diesel Power With Purpose

From the Cummins-powered Allegro Bay to Tiffin’s rear-engine diesel coaches, each platform is designed to deliver the power and confidence needed for highway travel, changing grades, towing, and longer journeys.

Purpose-Built Chassis Confidence

The Allegro Bay pairs its Super C design with a Freightliner S2RV chassis, while Tiffin’s diesel pushers use chassis platforms engineered around ride quality, strength, stability, and control.

Designed Around the Driver

Thoughtful visibility, accessible controls, braking support, and model-specific driver technology help create a more intuitive and confident experience behind the wheel.

Made for Longer Journeys

Whether you prefer the versatility of a Super C or the expansive feel of a diesel pusher, generous capacity, storage, and travel-focused systems help keep comfort at the center of the experience.

Four distinct approaches to Tiffin diesel travel, each designed to make the journey feel as considered as the destination.

Compare Power & Specifications

What Sets Tiffin Apart

Look Beyond the Feature List

When comparing luxury diesel motorhomes, the right choice is about more than individual specifications. Consider how the coach brings comfort, capability, design, and ownership support together.

What Buyers Compare

The Tiffin Focus

What to Look For

Ride & Driving Confidence

Tiffin diesel coaches combine capable power with chassis, suspension, visibility, and driver-focused technology designed to make long-distance travel feel more composed.

Compare the complete driving experience — not simply horsepower. Consider ride quality, handling, towing, controls, visibility, and long-term serviceability.

Interior Craftsmanship

Residential-inspired cabinetry, coordinated materials, thoughtful lighting, storage, and finishes create interiors designed to feel cohesive rather than simply feature-heavy.

Look beyond first impressions. Compare cabinetry construction, material quality, storage usability, hardware, lighting, fit, finish, and how the interior feels after extended use.

Floorplan & Livability

Phaeton, Allegro Bus, and Zephyr offer distinct levels of space, privacy, storage, and residential comfort so buyers can choose around the way they actually travel.

Think about how you will live in the coach every day. Compare bathroom access, bedroom privacy, kitchen workflow, seating, storage, guest accommodations, and movement through the coach.

Capability & Travel Range

The Tiffin diesel lineup offers different levels of power, capacity, storage, and capability designed around everything from shorter luxury coaches to flagship long-distance travel.

Compare GVWR, GCWR, towing capacity, fuel capacity, storage, tank sizes, engine, and chassis together rather than judging capability from one number alone.

Ownership Experience

Choosing the coach is only part of the experience. La Mesa RV provides guidance through inventory selection, walkthrough, delivery planning, and the transition into ownership.

Ask what happens after you choose the coach. Consider delivery, orientation, service access, dealer support, parts availability, and who will help when questions come up later.

The best luxury diesel coach isn’t simply the one with the longest feature list. It’s the one that fits the way you want to travel.

Compare the details that affect comfort, confidence, usability, and ownership — then decide which Tiffin feels right for you.

Compare Tiffin Models

The Tiffin Experience

Designed for the Journey.
Refined in Every Detail.

Explore the spaces and details that define Tiffin luxury, from commanding exterior presence to residential-inspired living spaces.

Schedule a Private Walkthrough

Tiffin luxury diesel motorhome exterior — Exterior

Tiffin luxury diesel motorhome living area — Living Area

Tiffin luxury diesel motorhome kitchen — Kitchen

Tiffin luxury diesel motorhome primary suite — Primary Suite

Tiffin luxury diesel motorhome bathroom — Rear Bathroom

The La Mesa RV Delivery Experience

A More Thoughtful Way to Take Delivery

Your Tiffin ownership experience should begin with confidence. From arrival and coach preparation to a detailed walkthrough, our dedicated delivery team helps make the transition into your new Phaeton, Allegro Bus or Zephyr feel personal, organized, and complete.

Fly In, We’ll Handle the Rest

Flying in for delivery? A member of our Tiffin Delivery team can help make your arrival easier and bring you directly to your coach for the start of your delivery experience.

A Walkthrough Built Around You

Your delivery includes time to walk through the coach, understand key systems and controls, and get answers to the questions that matter before you head out.

Prepared Before You Arrive

Your coach is prepared for delivery before your appointment, helping create a smoother handoff and giving you more time to focus on learning your new Tiffin.

Dedicated Tiffin delivery experiences are available through our diesel delivery centers in Mesa, Arizona and Sanford, Florida.

Explore Delivery Centers

Delivery Center Locations

Tiffin Diesel Motorhome Delivery in Arizona & Florida

Dedicated Tiffin diesel delivery experiences are available at La Mesa RV in Mesa, Arizona and Sanford, Florida.

Representative La Mesa RV Delivery Experience

Your Delivery Day

Arrive. Learn Your Coach. Leave Ready for the Road.

Delivery is more than receiving the keys. It is your opportunity to get comfortable with your coach, review its systems, ask questions, and start ownership with greater confidence.

Welcome & Final Details

Complete the final steps of your purchase and prepare for your coach orientation.

Coach Orientation

Walk through important systems, controls, features, and everyday operation before departure.

Questions Before You Go

Take the time to get answers and feel more familiar with your new Tiffin before beginning the journey.

Florida Delivery Center

Sanford

Southeast Delivery

A dedicated Southeast destination for Tiffin diesel delivery, coach orientation, and a more focused start to your ownership experience.

4441 Orange Blvd
Sanford, FL 32771

Dedicated Tiffin diesel delivery

Explore Sanford

Arizona Delivery Center

Mesa

Southwest Delivery

A dedicated Southwest destination for Tiffin diesel delivery, coach orientation, and a more focused start to your ownership experience.

3427 N Greenfield Rd
Mesa, AZ 85215

Dedicated Tiffin diesel delivery

Explore Mesa

Have questions about delivery location, timing, or what to expect? Our team can help you plan the experience around your purchase.

Plan Your Delivery Experience

Ready to Find Your Tiffin?

Let’s Find the Right Tiffin for You

Tell us what you’re looking for and our team can help you compare available coaches, floorplans, delivery options, current offers, and availability.

Tell Us What Matters Most

Share the floorplan, features, location, or travel priorities you have in mind.

Compare Available Coaches

We’ll help you explore available Phaeton, Allegro Bus, and Zephyr inventory that matches your priorities.

Plan the Next Step

Arrange a walkthrough, discuss delivery, or get answers before deciding which coach is right for you.

Request Availability

Talk With a Tiffin Specialist

Get help comparing floorplans, current inventory, pricing, available equipment, and delivery options.

Phaeton + Allegro Bus + Zephyr Floorplan Guidance Delivery Planning Current Availability

2026 Tiffin Diesel Motorhomes

50 Years of Craft, Built for a Lifetime of Journeys

Two Names, Trusted Across Generations.

Compare 2026 Tiffin Diesel Motorhomes

Diesel capability with residential comfort.

Residential comfort, thoughtfully balanced.

More space, capability, and refinement.

The fullest expression of the Tiffin experience.

Thoughtful Spaces for Living, Hosting, and Relaxing

Room to settle in and feel at home

Made for the moments you share

Comfort that adapts to the journey

Sophisticated Design Without Sacrificing Function

Residential-Inspired Finishes

Thoughtful Cabinetry

Purposeful Lighting

Details Designed for Everyday Living

Designed to Feel Cohesive From Every Angle

Residential comfort with a polished, coordinated finish

Compare Tiffin Diesel Motorhome Floorplans

A Spacious Super C Built Around Everyday Living

More Privacy for Longer Trips

Super C Capability in a More Manageable Footprint

A More Manageable Approach to Tiffin Luxury

Added Convenience for Longer Stays

More Living Space for Extended Travel

Maximum Phaeton Space and Storage

Allegro Bus Luxury in a More Manageable Length

Built for Comfortable Extended Travel

Expansive Living With More Private Storage

More Space. More Privacy. More Flexibility.

Residential Space at the Highest Level of Tiffin Luxury

A Private Retreat Designed for Extended Travel

Find the Tiffin That Fits the Way You Travel

38 AB

38 BB

34 DB

35 CH

37 BH

40 IH

44 OH

36 AP

40 IP

45 BP

45 OPP

45 FZ

45 PZ

Luxury Should Feel Just as Good in Motion.

Confidence You Can Feel From the Driver’s Seat

Diesel Power With Purpose

Purpose-Built Chassis Confidence

Designed Around the Driver

Made for Longer Journeys

Look Beyond the Feature List

Ride & Driving Confidence

Interior Craftsmanship

Floorplan & Livability

Capability & Travel Range

Ownership Experience

Designed for the Journey. Refined in Every Detail.

A More Thoughtful Way to Take Delivery

Fly In, We’ll Handle the Rest

A Walkthrough Built Around You

Prepared Before You Arrive

Tiffin Diesel Motorhome Delivery in Arizona & Florida

Arrive. Learn Your Coach. Leave Ready for the Road.

Let’s Find the Right Tiffin for You

Tell Us What Matters Most

Compare Available Coaches

Plan the Next Step

Talk With a Tiffin Specialist

Two Names,
Trusted Across Generations.

Designed for the Journey.
Refined in Every Detail.