AI Damage2018 Lexus IS: common problems
Owners of the 2018 Lexus IS filed 3 complaints with NHTSA, most often about engine and latches, locks, linkages. The maker issued 22 service bulletins for this year. We found 1 repair videos on YouTube. Details by component below, with sources.
Key figures
- Owner complaints
- 3
- Technical service bulletins (TSB)
- 22
- YouTube repair videos
- 1
What fails most often
- 1 Engine 33% of all complaints
- 2 Latches, locks, linkages 33% of all complaints
- Engine: 1 complaints (33% of all); manufacturer bulletins for this component: 2.
- Latches, locks, linkages: 1 complaints (33% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 2 L · petrol · turbo · 4 cyl
- 3.5 L · petrol · 6 cyl
- automatic, 6-speed
- automatic, 8-speed
Drive: RWD, AWD
Symptoms owners describe
How many of the 3 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 1 | 0 | 2 |
| Latches, locks, linkages | 1 | 0 | 0 |
| Structure | 0 | 0 | 17 |
| Electrical system | 0 | 0 | 1 |
| Engine and cooling | 0 | 0 | 1 |
| Other | 1 | 0 | 1 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
All four (4) door actuators stopped working or work intermittently. This is a known issue with both front and rear driver and passenger doors. Automobile doors will not open.
Comparison
By complaint count this model year ranks 1,806 of 2,102 model years in the NHTSA data (among the 14% least complained about).
On average one model year of the IS has 2 complaints (12 years in the data). This year has 3, above average.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Latches, locks, linkages. Door, hood and tailgate latches, especially near the impact.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Some 2005 – 2026 Lexus vehicles that have undergone water intrusion may exhibit a condition in which a…
Some 2005 – 2026 Lexus vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The…
- The air conditioning dye injection tool kit has been developed to aid in identifying the location of air…
The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and…
- Some 2010 – 2026 model year Lexus vehicles may exhibit paint stains after the removal of Rapgard™
The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard™. The wrinkles may trap water and cause the paint to stain from the trapped moisture, especially on horizontal…
- Some 2005 – 2024 Lexus vehicles that have undergone water intrusion may exhibit a condition in which a…
Some 2005 – 2024 Lexus vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The…
- Some 2015 – 2017 model year NX 200t, 2016 – 2017 model year GS 200t, IS 200t, and RC 200t, 2018 – 2019…
Some 2015 – 2017 model year NX 200t, 2016 – 2017 model year GS 200t, IS 200t, and RC 200t, 2018 – 2019 model year GS 300, and 2018 – 2021 model year NX 300, and 2018 – 2024 model year IS 300 and RC 300 vehicles…
- Some 2005 – 2024 Lexus vehicles that have undergone water intrusion may exhibit a condition in which a…
Some 2005 – 2024 Lexus vehicles that have undergone water intrusion may exhibit a condition in which a musty smell is present. Follow the procedures in this bulletin to remediate the odor and address this condition…
- To prevent brake rotor rust from forming during transportation and storage, wheel film will be used…
To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from…
- The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix…
The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and…
- Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical…
Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal…
- Lexus vehicles are currently protected with RapgardTM protective film designed to protect the horizontal…
Lexus vehicles are currently protected with RapgardTM protective film designed to protect the horizontal painted surfaces. This material protects from acid rain, environmental fallout, and rail contamination. Follow…
- Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad…
Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels, exposure to heavy machinery facilities, grinding, welding, etc. This type of contamination can…
- TSB
Some 2019 ? 2023 model year ES 350, 2018 ? 2023 model year IS 350, IS 300, RC 350, RC 300, 2016 ? 2022 model year RX 350, and 2016 ? 2020 model year GS 350 vehicles equipped with a 2GR-FKS engine may exhibit a knocking…
NHTSA lists 22 bulletins for this year; the 12 newest are shown here.
Repair videos
We do not copy videos: these are YouTube links credited to their authors. Amounts are as stated by the author and not verified by us.
Other years of this model
Questions and answers
What are the most common problems with the 2018 Lexus IS?
Owner complaints to NHTSA most often mention: engine, latches, locks, linkages. Total complaints: 3. The most frequent symptoms in complaint texts: door locks, latches, handles (33%), windows, sunroof (33%).
How many service bulletins (TSB) were issued for the 2018 Lexus IS?
NHTSA lists 22 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2018 Lexus IS from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2018 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.