2020 Tiffin Phaeton 40 IH — Should You Buy One?
Typical asking price: $220,000–$300,000. There are 2 high-severity known issues you need to know before handing over a check.
Kestrel Take
A luxury diesel pusher from Tiffin, a brand beloved for quality and legendary customer support — the Phaeton offers a plush, spacious coach on a Freightliner chassis with a Cummins diesel. This is a big investment, so the inspection is thorough: roof/seals, slides, the diesel chassis and its emissions system, and the many luxury systems. A well-maintained Phaeton with records is a superb, high-comfort coach; a neglected diesel pusher is a very expensive mistake.
What we checked
Not checked against public records
Motorhomes are in NHTSA’s database and we intend to use it. We have not switched it on yet because recall notices name sub-brands and floorplans rather than the model we key on, and folding them in carelessly would put another coach’s recall on this page. What follows is our own write-up, and it has not been reconciled against an official record. Treat it as a starting point, not a verdict.
Known Issues for the 2020 Tiffin Phaeton 40 IH
Ranked by wallet impact. These are documented, recurring problems — not freak accidents. How we decide that.
Even luxury coaches leak; inspect the roof, seals, and slide-outs meticulously — repairs on a big coach are costly.
Repair cost (estimate): $1,000-$15,000+
Source: not yet checked against public records.
The Cummins diesel and its emissions system need proper service; verify thorough history and no active faults.
Repair cost (estimate): $1,000-$8,000 if neglected
Source: not yet checked against public records.
Multiple large slides, hydraulic leveling, and air suspension/brakes all need to work; verify each.
Repair cost (estimate): $500-$5,000
Source: not yet checked against public records.
Residential appliances, inverters, and multiple ACs are pricey; verify all. Replace age-expired tires.
Repair cost (estimate): $500-$6,000
Source: not yet checked against public records.
Walk-Away Red Flags
- ✗Water damage / soft roof
- ✗Diesel emissions faults / thin history
- ✗Slide/leveling/air faults
- ✗Old-date-code tires
Good Signs
- ✓Dry, intact roof and seals
- ✓Documented diesel service, no emissions faults
- ✓All slides/leveling/systems working, fresh tires
More from Tiffin
Similar rvs & motorhomes
2018 Newmar Dutch Star 4369
$175,000–$240,000
2019 Entegra Aspire 44B
$285,000–$380,000
2020 Winnebago Adventurer 35F
$110,000–$150,000
2019 Airstream Interstate Lounge
$110,000–$150,000
2019 Airstream Classic 33FB
$100,000–$145,000
2020 Winnebago View 24D
$100,000–$140,000
2019 Fleetwood Bounder 36H
$82,000–$118,000
Also in the guide: Vans (Cargo & Passenger)
Also in the guide: Trailers & Campers
Found a specific Tiffin Phaeton 40 IH?
This page covers what goes wrong on the 2020 Tiffin Phaeton 40 IH in general. A free read looks at the one you're considering— it checks that seller's asking price against the market and names the issues that matter most for this exact year.
Get a free read on it →Instant, on the page, no card and no account. The year, make and model come with you — you add the asking price and the mileage.
The free read stops short of a verdict, because that needs the photos. The full report — $7.99 takes your photos and the seller's description, does the fair-offer math, and ends in BUY, NEGOTIATE or WALK AWAY with a negotiation script. Delivered to your inbox, usually within minutes.
Known issues on this page are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.
No bullshit, no upsells, no affiliate links. One report, one price — we'll never charge you rent for your own thinking.
Think we got something wrong? Tell us — a real person reads every message.