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BMW B47 vs TDV6 / SDV6: which engine is more reliable?

According to our risk index, the TDV6 / SDV6 carries less risk than the BMW B47: 46/100 (moderate risk) versus 73/100 (high risk). The BMW B47 has 3 documented serious faults, the main one being «EGR cooler leaks with risk of engine fire»; the TDV6 / SDV6 has 2 documented serious faults, the main one being «Crankshaft breakage and spinning main bearing shells».

Risk index

BMW B47

73

High risk · 3 serious faults

Risk index

TDV6 / SDV6

46

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

9 sourcesHow we work

Is the BMW B47 reliable?

The BMW B47 (since 2014, successor to the N47) improves the timing chain tensioner, guides and oil supply and greatly reduces the failure rate of its predecessor, but it is not free of problems: the EGR cooler has been the subject of several BMW technical campaigns for engine fire risk since 2018, and the turbo and particulate filter need careful maintenance.[1][2][3][4]

See the 4 of the BMW B47 faults

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.[5][6][7]

See the 3 of the TDV6 / SDV6 faults

Side-by-side comparison

Comparison of BMW B47 and TDV6 / SDV6
BMW B47TDV6 / SDV6
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,995 cm³2,720 cm³
TimingChainWet belt (belt-in-oil)
Power114–228 hp188–302 hp
Productionsince 2014[1]2004–2018[8]
Reliability
Risk index (what is it?)73High risk46Moderate risk
Documented faults43
Of high or critical severity32
Worst severityCritical severityCritical severity
Main faults
  1. Critical severity: EGR cooler leaks with risk of engine fire
  2. High severity: Timing chain wear (improved, but is it really at the front?)
  3. High severity: Premature turbo wear from neglected maintenance
  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
Most expensive documented repairup to €2,000Premature turbo wear from neglected maintenancePublished figure[3]No reliable data
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • B47 114-150 hp, single turbo (2014-)[2][4]
  • B47 168-190 hp, single turbo (2014-)[2][4]
  • B47 202-228 hp, twin-turbo (2015-)[2][4]
  • B47C20 (MINI Cooper D/SD and Countryman, 2014-)[1][4]
  • 2.7 TDV6 (276DT/DT17, 2004-2010)[7][9]
  • 3.0 TDV6/SDV6 (306DT, 2009-2018)[5][6]
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

BMW B47

See the 19 models with the BMW B47

TDV6 / SDV6

See the 14 models with the TDV6 / SDV6

Other comparisons

With the BMW B47

With the TDV6 / SDV6

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. BMW B47Wikipedia (inglés) · Other source · consulted 26 September 2026
  2. 324.000 diésel de BMW tendrán que pasar por el taller en Europa, por un posible riesgo de incendio en la EGRDiariomotor · Motoring press · published 8 August 2018 · consulted 26 September 2026 · in Spanish
  3. Motor BMW B47: problemas, modelos y qué revisarCarexam · Motoring press · consulted 26 September 2026 · in Spanish
  4. Motor BMW B47 - Reparación EspecializadaDasercars · Technical documentation · consulted 26 September 2026 · in Spanish
  5. Land Rover Discovery TDV6 engine failures making headlinesLandyOnline · Other source · published October 2015 · consulted 5 October 2026
  6. Land Rover & Jaguar SDV6/TDV6 Crankshaft RepairJLR Engines · Technical documentation · consulted 5 October 2026
  7. Land Rover 2.7 TDV6 Timing Belt Replacement GuideBudget Parts (roverparts.eu) · Technical documentation · consulted 5 October 2026
  8. Ford AJD-V6/PSA DT17 engineWikipedia · Other source · consulted 5 October 2026
  9. TdV6 Timing BeltLes Richmond Automotive (lrautomotive.com.au) · Technical documentation · consulted 5 October 2026