On certain 2017 model year to 2020 model year Land Rover and Range Rover vehicles the Malfunction Indicator Lamp (MIL) may illuminate if the vehicle is refueled within 15 seconds of turning the engine off. Diagnostic Trouble Codes (DTC) P0496-00 may be stored in the Powertrain Control Module (PCM) .
full bulletin at NHTSA ↗2018 Land Rover Discovery powertrain problems
severe 8 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
8
Recalls
0
Avg fix
$2,500
1crash
When does it fail?
Of the 8 powertrain complaints filed for the 2018 Land Rover Discovery, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 4 model years of Land Rover Discovery we track for powertrain problems, this one carries the most owner complaints on file — 8.
Powertrain accounts for 23% of all owner complaints filed against this vehicle, across 5 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
A concern has been identified where on certain vehicles equipped with TDV6 3.0L Diesel and Ingenium I4 2.0L Diesel engines, when connected to a diagnostic scan tool during the California SMOG test, the Powertrain Control Module (PCM) incorrectly reports the monitor readiness status as 'not supported'.
full bulletin at NHTSA ↗CLOSED ISSUE - On certain 2017 to 2020 model year Land Rover vehicles the Malfunction Indicator Lamp (MIL) may illuminate if the vehicle is refueled within 15 seconds of turning the engine off. Diagnostic Trouble Codes (DTC) P0496-00 may be stored in the Powertrain Control Module (PCM).
full bulletin at NHTSA ↗Certain 2017 to 2019 Land Rover vehicles equipped with TDV6 3.0L Diesel engines and Ingenium I4 2.0L Diesel engines, when connected to a diagnostic scan tool during the California SMOG test, the Powertrain Control Module (PCM) incorrectly reports the monitor readiness status as not supported.
full bulletin at NHTSA ↗After thermostat replacement, the instrument cluster says that the engine is overheating while driving.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 3 most recent
When attempting to make evasive maneuvers during normal driving there is a very significant delay after stepping on the accelerator. This is an intermittent problem and seems to happen when slowing down and then trying to accelerate. This has already almost resulted in 2 accidents. This has been reported to the dealer and I was advised there was nothing wrong. The service manager informed me…
Laggy acceleration at "rolling stop" speeds of 2-10 MPH. 2-4 second delay merging into traffic or turning into traffic. No amount of accelerator will alleviate the lag. Supercharged v6 gas engine.
There is a dangerous throttle lag when accelerating from a rolling stop. Many users have nearly had accidents like me. You press throttle and it does nothing for like 2 seconds then suddenly engine picks up... Its a gasoline v6 engine so its not turbo lag.... And when you are actually stopped and accelerate its just fine. Its just when slowly rolling its extremely dangerous!!!
Had powertrain trouble with your 2018 Land Rover Discovery?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2018 Land Rover Discovery?
It's a meaningful issue. 8 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 8 complaints filed, powertrain issues most often appear around 10,788 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Land Rover/Discovery.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.