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TDV6 / SDV6 vs 2.3 dCi (M9T): which engine is more reliable?

According to our risk index, the 2.3 dCi (M9T) carries less risk than the TDV6 / SDV6: 32/100 versus 46/100 (both moderate risk). The TDV6 / SDV6 has 2 documented serious faults, the main one being «Crankshaft breakage and spinning main bearing shells»; the 2.3 dCi (M9T) has 2 documented serious faults, the main one being «Clogged or broken EGR valve damaging the turbo».

Risk index

TDV6 / SDV6

46

Moderate risk · 2 serious faults

Risk index

2.3 dCi (M9T)

32

Moderate risk · 2 serious faults

Lower risk

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

10 sourcesHow we work

Is the TDV6 / SDV6 reliable?

The Land Rover and Jaguar TDV6/SDV6 diesel V6 engines, shared with Peugeot and Citroën, have a serious documented fault: crankshaft and main bearing shells on the 3.0, and the belt-driven oil pump on the 2.7. Insist on a service history and weigh up the repair cost before buying.[1][2][3]

See the 3 of the TDV6 / SDV6 faults

Is the 2.3 dCi (M9T) reliable?

The 2.3 dCi M9T is a van diesel with good durability if maintenance is kept up. The weak points cited are the EGR and the turbo, the injectors, and the particulate filter in urban use; the sources are mostly opinion websites.[4][5]

See the 5 of the 2.3 dCi (M9T) faults

Side-by-side comparison

Comparison of TDV6 / SDV6 and 2.3 dCi (M9T)
TDV6 / SDV62.3 dCi (M9T)
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement2,720 cm³2,300 cm³
TimingWet belt (belt-in-oil)Chain
Power188–302 hp100–180 hp
Production2004–2018[6]since 2010[4][5][7]
Reliability
Risk index (what is it?)46Moderate risk32Moderate risk
Documented faults35
Of high or critical severity22
Worst severityCritical severityHigh severity
Main faults
  1. Critical severity: Crankshaft breakage and spinning main bearing shells
  2. Critical severity: Broken oil pump housing and timing belt jumping on the 2.7
  3. Medium severity: Turbo and pneumatic actuator failure on the 3.0 TDV6/SDV6
  1. High severity: Clogged or broken EGR valve damaging the turbo
  2. Medium severity: Faulty injectors on the 2.3 dCi
  3. Medium severity: Diesel particulate filter (DPF) clogged in urban use
Most expensive documented repairNo reliable dataup to €2,300Clogged or broken EGR valve damaging the turboPublished figure[4][8]
Which versions to buy
BuyRecommended versionsNone
  • 2.3 dCi 100-125 hp (M9T)[5]
  • 2.3 dCi 130-145 hp (M9T)[5]
With cautionVersions to be cautious about
  • 2.7 TDV6 (276DT/DT17, 2004-2010)[3][9]
  • 3.0 TDV6/SDV6 (306DT, 2009-2018)[1][2]
  • 2.3 dCi 150-180 hp (M9T, some twin-turbo)[5]
  • 2.3 dCi in the Navara D23 (NP300)[10]
AvoidVersions to avoidNoneNone

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

TDV6 / SDV6

See the 15 models with the TDV6 / SDV6

2.3 dCi (M9T)

Other comparisons

With the TDV6 / SDV6

With the 2.3 dCi (M9T)

Compare other engines

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Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Land Rover Discovery TDV6 engine failures making headlinesLandyOnline · Other source · published October 2015 · consulted 5 October 2026
  2. Land Rover & Jaguar SDV6/TDV6 Crankshaft RepairJLR Engines · Technical documentation · consulted 5 October 2026
  3. Land Rover 2.7 TDV6 Timing Belt Replacement GuideBudget Parts (roverparts.eu) · Technical documentation · consulted 5 October 2026
  4. Renault Master III 2.3 dCi 130: fiabilité, pannes et coûtsCarverif · Other source · consulted 5 October 2026 · in French
  5. Fiabilité Renault Master 2.3 dCiCarverif · Other source · consulted 5 October 2026 · in French
  6. Ford AJD-V6/PSA DT17 engineWikipedia · Other source · consulted 5 October 2026
  7. Renault Master (tercera generación)Wikipedia · Other source · consulted 5 October 2026
  8. Fiabilité du Renault Master RT 2.3 dCi: analyse complèteCarverif · Other source · consulted 5 October 2026 · in French
  9. TdV6 Timing BeltLes Richmond Automotive (lrautomotive.com.au) · Technical documentation · consulted 5 October 2026
  10. Nissan Navara wymaga zmian systemu oczyszczania spalinAutokatalog.pl · Motoring press · published 23 August 2023 · consulted 5 October 2026 · in another language