
Land Rover Range Rover L405 Engines — The Complete UK Guide
Every engine fitted to the fourth-generation Range Rover — from the 3.0 TDV6 diesel to the 5.0-litre supercharged V8. Real UK replacement costs, honest failure data, and the crankshaft and timing chain risks that define this generation's ownership story. Backed by 284+ real UK L405 enquiries in 2025 [EM-VERIFIED].
Explore L405 EnginesLand Rover Range Rover L405 Engine Codes — The Complete Database
Every engine fitted to the L405 Range Rover — from the 2012 launch to the 2021 phase-out, including the 2018 facelift updates.

Overview
Land Rover Range Rover L405 — Overview
The L405 is the fourth generation of the full-size Range Rover, launched in 2012 and produced until 2021.
It was the first SUV to feature an all-aluminium monocoque chassis, shedding up to 420kg compared to its predecessor, the L322. The engine lineup spanned the 3.0-litre TDV6 and SDV6 diesels, the 4.4-litre SDV8 diesel, the 3.0-litre supercharged V6 petrol, and the 5.0-litre supercharged V8 petrol, plus a diesel hybrid from 2015 and a plug-in hybrid (P400e) from 2018. A 2018 facelift brought revised styling, updated infotainment, and the P400e hybrid.
Key Facts
Platform
JLR D7u aluminium monocoque
Predecessor
L322
Successor
L460
Sibling body styles in this generation
none — L405 is the full-size Range Rover; Range Rover Sport L494 is a separate model
Market Intelligence
The L405 generated 284 real UK engine enquiries in 2025 [EM-VERIFIED], with strong demand for both the 4.4 SDV8 and the 3.0 diesel variants.
Best & Worst Engines

Best Diesel Overall
4.4 SDV8 (448DT)
“The SDV8 is a brilliant, brilliant combination — very reliable, relentless torque, and low 30s mpg possible. Timing chains and tensioners are usually faultless. Oil dilution is a known issue but not universal.”
Who it's for: buyers who want flagship diesel refinement without the TDV6's crank risk.

Best Petrol Overall
3.0 V6 Supercharged (AJ126/306PS)
“Rare, but they won't have the same issues as the SDV6 or the 5.0 SC. Smooth power delivery and genuinely the cleanest option among the V6 and V8 petrols.”
Who it's for: buyers who want petrol refinement without the 5.0's timing chain worries.

Highest Risk
3.0 TDV6/SDV6 (306DT)
“Crankshaft and bearing failures are the defining risk of this generation. The narrow bearing design causes crankshaft fatigue and oil starvation. A snapped crank means a full long engine replacement.”
Who it's for: buyers who are prepared for a potential £7,000+ engine replacement.

Most Expensive Failure
5.0 V8 Supercharged (508PS)
“Timing chain stretch at low mileage is the most famous problem. Coolant crossover pipes under the supercharger are hard to see and can fail catastrophically. The supercharger coupler can also fail.”
Who it's for: buyers with deep pockets who prioritise V8 theatre over running costs.

Best Value
4.4 SDV8 (448DT)
“The SDV8 costs more upfront but delivers the best combination of reliability, torque, and refinement. No catastrophic crank failure risk, no timing chain woes. The ownership costs are higher, but the risk profile is dramatically lower.”
Who it's for: buyers who want the best L405 engine and are willing to pay for it.

Most Overlooked
3.0 V6 Supercharged (AJ126/306PS)
“Rarely discussed, but the supercharged V6 petrol avoids the crank failure of the diesels and the timing chain issues of the 5.0 V8. It's smooth, refined, and genuinely the quietest option in the range.”
Who it's for: buyers who want petrol refinement without the V8's complexity.

Land Rover Range Rover L405 — Ownership Economics
The L405 rule
A £7,000 SDV6 recon against a £20,000 L405 sits at 35% — well within our 60% Land Rover threshold. Against a £12,000 example, the same recon is 58% — close to the line. The 5.0 V8 is another matter: a £12,000 recon against a £20,000 car is 60% — on the line. Value the car first, then the repair. And always, always check the crank history on any 3.0 diesel.
Key Takeaways
Which L405 Costs Least To Own?
4.4 SDV8 — higher upfront but no catastrophic failure risk.
Which L405 Costs Most To Own?
5.0 V8 Supercharged — timing chain work and fuel bills add up fast.
Which L405 Is Best Value?
4.4 SDV8 — flagship diesel refinement without the TDV6's crank risk.
Common Problems

L405 Engine Replacement Costs — By Engine and Condition
No Generation variance note required — no Engine Page baseline exists for these engines yet. Costs are sourced from UK specialist suppliers [EM-QUOTE].
Core Variants
Core Variants
Diesel Variants
Petrol Variants
Scope note: All variants listed are Range Rover L405 only. The Range Rover Sport L494 and the later L460 are separate models with different engine availability and are covered on their own pages.
Market Intelligence
Most Requested E90 Engines (2025)
- 1.1. 4.4 SDV8 (largest share of 320 JLR‑wide figure)
- 2.2. 3.0 TDV6 (largest share of 980 JLR‑wide figure)
- 3.3. 5.0 V8 Supercharged (largest share of 330 JLR‑wide figure)
Most Requested E90 Variants
- 1.1. SDV8
- 2.2. TDV6
- 3.3. V8 Supercharged
Average E90 Replacement Cost
£3,000–£14,000 reconditioned, supply only [EM‑QUOTE]
Most Common E90 Failures
- 1.1. 3.0 TDV6/SDV6 crankshaft bearing failure
- 2.2. 5.0 V8 timing chain stretch
- 3.3. Air suspension system failure

Land Rover Range Rover L405 SDV8
3
enquiries

Land Rover Range Rover L405 TDV6
2
enquiries

Land Rover Range Rover L405 V8 SC
2
enquiries
FAQ

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UK Engine Replacement Services for Range Rover L405
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