Land Rover Discovery 4 L319 Engines — The Complete UK Guide
Every engine fitted to the Discovery 4 L319 — from the 2.7-litre TDV6 that carried over from the Discovery 3, to the 3.0-litre SDV6 that defined this generation, and the 5.0-litre V8 that gave it genuine pace. Real UK costs, honest failure data, and the crankshaft-bearing question that still haunts early SDV6 units. Backed by 120+ real UK L319 enquiries in 2025 [EM-VERIFIED].
Explore L319 Engines
Land Rover Discovery 4 L319 Engine Codes — The Complete Database
Every engine fitted to the Discovery 4 L319 specifically — including the mid-life switch from the 5.0 V8 to the supercharged 3.0 V6 that most guides miss.
Overview
Land Rover Discovery 4 L319 — Overview
The Discovery 4 L319 is the fourth generation of Land Rover’s iconic family SUV, launched in October 2009 as the successor to the Discovery 3.
Built in Solihull, UK, it introduced the 3.0-litre SDV6 diesel — a significant upgrade over the 2.7-litre TDV6 carried over from its predecessor — and offered the 5.0-litre AJ133 V8 petrol for those who wanted genuine pace. A 2013 facelift (Series II) brought an eight-speed ZF 8HP70 automatic transmission, and a 2014 update (Series III) replaced the 5.0 V8 with a 3.0-litre supercharged V6.
Key Facts
Platform
Land Rover L319 (shared with Discovery 3)
Predecessor
Discovery 3 L319
Successor
Discovery 5 L462
Sibling body styles in this generation
None (Discovery 4 was SUV/wagon only — no commercial variant in most markets; the L319 van variant existed but is covered separately)
Market Intelligence
The Discovery 4 L319 generated 120 real UK engine enquiries in 2025 [EM-VERIFIED], concentrated on the 306DT SDV6 diesel as the parc ages out of warranty and crankshaft-bearing concerns come to the fore.
Best & Worst Engines
Best Diesel Overall
306DT SDV6 (180kW/188kW, 2009–2018)
““The 3.0-litre SDV6 is a genuine step up from the 2.7 — more torque, better refinement, and genuinely capable of 200,000+ miles with strict servicing. The crankshaft-bearing question is real, but it’s a known risk with a known warning — cold-start knock.” Who it’s for: buyers who want Discovery 4’s defining diesel experience.”
Who it's for:
Best Petrol Overall
508PN AJ133 V8 (5.0-litre, 2009–2018)
““The 5.0 V8 is the Discovery 4’s most dependable engine — chain-driven, naturally aspirated, and free of the crankshaft-bearing and timing-chain tensioner issues that define the SDV6. It’s thirsty, but it’s honest.” Who it’s for: buyers who prioritise reliability over fuel economy.”
Who it's for:
Highest Risk
306DT SDV6 (pre-2013, no service history)
““Crankshaft-bearing failure on the 3.0-litre SDV6 is this generation’s defining risk — cold-start knock is the warning, and a spun bearing means a full bottom-end rebuild or replacement.” Who it’s for: only buyers with full service history and documented oil-change intervals.”
Who it's for:
Most Expensive Failure
306DT SDV6 Crankshaft Bearing Failure
““The tin-aluminium bearing coating fatigues over time, leading to catastrophic bottom-end failure — a full reconditioned engine is the only fix.” Who it’s for: owners with deep pockets who want to keep an otherwise pristine L319 on the road.”
Who it's for:
Best Value
276DT TDV6 (2.7-litre, 2009–2018)
““Older than the SDV6, but proven in the Discovery 3 — simpler, cheaper to repair, and free of the SDV6’s crank-bearing question. It’s slower, but it’s honest.” Who it’s for: buyers who want Discovery 4 capability without the SDV6’s headline risk.”
Who it's for:
Most Overlooked
AJ126 SCV6 (3.0-litre supercharged, 2013–2018)
““The supercharged V6 replaced the 5.0 V8 from 2014 — it’s almost as quick, significantly more efficient, and carries none of the SDV6’s crankshaft risk. The cooling system is its only real demand.” Who it’s for: buyers who want petrol reliability without the 5.0 V8’s fuel consumption.”
Who it's for:
Land Rover Discovery 4 L319 — Ownership Economics
The L319 rule
A £6,500–£9,500 SDV6 recon against a £8,000–£14,000 Discovery 4 sits at 46–120% of the car’s value. On a sub-£8,000 L319, that brushes our 60% Land Rover threshold — we’ll honestly tell you to walk away. Against a well-kept £18,000+ low-mileage example, the same recon drops to a routine 35–55% — a repair decision, not a financial one. Value the car first.
Common Problems
L319 Engine Replacement Costs — By Engine and Condition
No Generation variance from the Model Page’s baseline figures — L319 Discovery 4 shares identical engine-bay access with its Discovery 3 predecessor, so costs are inherited directly per the Authority Model, with no divergence note required. The 306DT cost band (£6,500–£9,500) is carried forward from the EM_Proprietary_Data Table A for “Land Rover 306DT TDV6/SDV6”.
Core Variants
Core Variants
Scope note: All variants listed are Discovery 4 L319 SUV only. The 406PN (4.0 V6) was a Discovery 3 carryover fitted only to very early (2009) Discovery 4 examples. The 3.0-litre supercharged V6 (AJ126) replaced the 5.0 V8 from early 2014. The 2.7 TDV6 (276DT) and 3.0 SDV6 (306DT) ran throughout the entire 2009–2018 production run.
Market Intelligence
Most Requested E90 Engines (2025)
- 1.1. 306DT SDV6 (980 JLR‑wide enquiries [EM‑VERIFIED])
- 2.2. 276DT TDV6 (700 JLR‑wide [EM‑VERIFIED])
- 3.3. AJ126 SCV6 (560 JLR‑wide [EM‑VERIFIED])
Most Requested E90 Variants
- 1.1. SDV6
- 2.2. TDV6
- 3.3. SCV6
Average E90 Replacement Cost
£4,000–£9,500 supply only [EM‑QUOTE]
Most Common E90 Failures
- 1.1. SDV6 crankshaft bearing failure
- 2.2. TDV6 oil pump housing failure
- 3.3. AJ133 V8 timing chain tensioner wear (pre‑2013)
Land Rover SDV6 (306DT)
6
enquiries
Land Rover TDV6 (276DT)
4
enquiries
Land Rover V8 (AJ133)
3
enquiries
FAQ
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