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Land Rover Discovery — what actually breaks, by engine

2015–2023 · 294 federal complaints · 3 engines

Reliability ratings usually stop at the model. But two Discoverys with different engines can fail in completely different ways — and the engine is a choice you make at purchase. Here is what owners actually complained about, separated by engine.

Land Rover Discovery
Photo: Kieran White from Manchester, England · CC BY 2.0

Ownership profile

Each axis is this model's percentile within its own segment — comparing a pickup's fuel economy against a compact car's would say nothing. Built from EPA test data.

Fuel economy52Running cost27Low emissions41Cabin spacenot measuredCargo spacenot measuredDisplacement5
21 MPG Fuel economy$3,600/yr Running cost436 g/mi Low emissions2.0 L Displacement

Value for money

27/ 100

$37,745

Capability per relative dollar, ranked against the same segment. It divides this model's average percentile across the axes above by its price relative to the segment median — so 80 means it delivers more per dollar than 80% of its class.

Price source: CarAPI vehicle trim database — base-trim MSRP, median across 2015-2020 model years. Unlike every other figure on this page, the price does not come from a federal record. It is the manufacturer's list price for the cheapest trim — what people actually paid varies with incentives and options, so treat this one axis as indicative, not exact.

What each engine's complaints are about

Share of component mentions. One complaint can name several components, so these describe what an engine's complaints are about — they are not a failure rate.

Transmission & drivetrainEngineBrakesElectricalSteeringBody & structureFuel systemEverything else

AJ126 · 3.0L V6

2017–2020

117complaints
Transmission & drivetrain 10%Engine 13%Electrical 22%
Show the numbers
ComponentShareMentions
Transmission & drivetrain9.8%19
Engine12.9%25
Brakes1.5%3
Electrical22.2%43
Steering2.1%4
Body & structure6.7%13
Fuel system2.1%4
Everything else42.8%83

GTDI · 2.0L I4

2015–2017 · Turbo

111complaints
Transmission & drivetrain 14%Engine 23%Brakes 10%
Show the numbers
ComponentShareMentions
Transmission & drivetrain13.9%23
Engine23.0%38
Brakes9.7%16
Electrical7.9%13
Steering6.7%11
Body & structure6.1%10
Fuel system6.1%10
Everything else26.7%44

AJ20P · 2.0L I4

2018–2023 · Turbo

66complaints
Transmission & drivetrain 18%Engine 21%Electrical 13%Fuel system 11%
Show the numbers
ComponentShareMentions
Transmission & drivetrain17.9%22
Engine21.1%26
Brakes4.9%6
Electrical13.0%16
Steering1.6%2
Body & structure3.3%4
Fuel system11.4%14
Everything else26.8%33

Diagrams show cylinder layout and displacement from the decoded VIN data. Turbo and supercharger marks come from EPA certification records; where EPA cannot tell two engines of the same size apart, the mark is left off rather than guessed.

How many of those complaints involved a fire, crash or injury

Unlike the totals above, these can be compared between engines. Each figure is a share of that engine's own complaints, so how many were sold cancels out. The vertical mark is the average across every vehicle in this database.

AJ126 · 3.0L V6

117
Fire0.9%
Crash4.3%
Injury1.7%

GTDI · 2.0L I4

111
Fire0.0%
Crash3.6%
Injury0.0%

all vehicles — Fire 1.1% · Crash 4.4% · Injury 2.6%

Still a share of complaints, not of vehicles on the road — it says how severe this engine's reported problems were, not how often it gets into trouble. Engines with fewer than 80 complaints are left out: fire is rare enough that a single extra case would swing the number.

Recalls on this model

Unlike everything above, recalls are issued for the whole model, not per engine — NHTSA publishes them by make, model and year. These are defects the manufacturer confirmed and filed federally, which makes them a useful counterweight to owner-reported complaints.

17 recalls · covering 2017–2025

Electrical System 5Engine And Engine Cooling 2Seat Belts 2Exterior Lighting 2Back Over Prevention 1Air Bags 1Seats 1Engine 1
All recalls, with campaign numbers
YearsComponentNHTSA campaign
2021–2024Electrical System › Propulsion System › Dc/Dc Converter26V599000
2021–2025Back Over Prevention › Sensing System › Camera26V458000
2021–2025Air Bags › Frontal26V389000
2021–2024Electrical System › Propulsion System › Dc/Dc Converter26V248000
2024–2024Engine And Engine Cooling › Engine › Oil/Lubrication › Filter/Screen24V450000
2017–2020Electrical System › Instrument Cluster/Panel23V393000
2022–2023Engine And Engine Cooling › Engine › Oil/Lubrication23V044000
2022–2023Seat Belts › Pretensioner22V523000
2020–2021Seat Belts › Front › Retractor21V668000
2020–2021Electrical System › 12V/24V/48V Battery21V457000
2018–2020Exterior Lighting › Lighting Control Module › Software21V117000
2019–2020Electrical System › 12V/24V/48V Battery20V694000
2017–2018Exterior Lighting20V143000
2020–2020Seats › Mid/Rear Assembly20V053000
2019–2019Engine19V040000
2018–2018Forward Collision Avoidance › Automatic Emergency Braking18V625000
2017–2017Fuel System, Gasoline18V337000

Recall repairs are free, always — any franchised dealer, regardless of the car's age, mileage, or how many owners it has had. A great many cars are driving around with recalls nobody ever redeemed.

More recalls does not mean a worse car. Recall counts rise with sales volume and model complexity, and a manufacturer that recalls promptly looks worse than one that drags its feet. Read what the recalls were for, not how many there were.

Check a specific car by VIN at NHTSA →

NHTSA crash-test ratings

Official 5-star ratings from standardized federal crash tests. Unlike the complaint figures above, these are directly comparable between models. Where a model year was tested in several versions, the lowest overall rating is shown.

Overall · 2024
Not rated
Frontal · 2024
Not rated
Side · 2024
Not rated
Rollover · 2024
Not rated

0.0% rollover risk

Model yearOverallFrontalSideRollover
2015Not ratedNot ratedNot ratedNot rated
2016Not ratedNot ratedNot ratedNot rated
2017Not ratedNot ratedNot ratedNot rated
2018Not ratedNot ratedNot ratedNot rated
2019Not ratedNot ratedNot ratedNot rated
2020Not ratedNot ratedNot ratedNot rated
2021Not ratedNot ratedNot ratedNot rated
2022Not ratedNot ratedNot ratedNot rated
2023Not ratedNot ratedNot ratedNot rated
2024Not ratedNot ratedNot ratedNot rated
Stability control: StandardForward-collision warning: StandardLane-departure warning: Standard

Source: NHTSA New Car Assessment Program.

Method, sources and limitations

How this was built

  1. Source: NHTSA public complaint database (api.nhtsa.gov), retrieved 2026-08-16. Every complaint carries the first 11 characters of the vehicle's VIN.
  2. Those partial VINs were decoded through NHTSA's vPIC service to identify the exact engine — 98.2% resolved successfully. This is how the data gets to engine level; model-level ratings cannot do this.
  3. Percentages are the share of component mentions, not of complaints. One complaint can name several components, so the figures describe what a given engine's complaints are about — they do not sum to a failure rate.

What this does not tell you

  • This is not a reliability ranking. Complaint totals track how many were sold, not how often they fail. Nobody publishes per-engine sales volume, so comparing totals between engines would be misleading. Read each engine's own breakdown; don't race them against each other.
  • Engines with fewer than 50 complaints are omitted — too small to say anything honest about.
  • Complaints are self-reported by owners. They skew toward problems that are alarming or expensive, and toward vehicles under active recall attention.

Compare with

Or see the whole segment at once: Midsize SUV →

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