The Volvo B 4204 T6 is a 1,984 cc, inline‑five turbocharged petrol engine produced between 1999 and 2004. It featured a dual overhead camshaft (DOHC) design with an aluminum cylinder head, representing Volvo's high — performance 20 — valve architecture. Output ranged from 191 kW (260 PS) to 200 kW (272 PS), with torque figures between 350–380 Nm, providing exhilarating acceleration and strong mid — range pull.
Fitted primarily to the Volvo S60 R, V70 R, and S80, the B 4204 T6 w…
Production years 1999–2004 meet Euro 3 standards (EU Regulation (EC) No 715/2007 historical annex).
The Volvo B 4204 T6 is a 1,984 cc inline‑five turbocharged petrol engine engineered for premium sports sedans and estates (1999-2004). It combines a dual overhead camshaft (DOHC) 20-valve design with a twin-scroll turbocharger to deliver strong, linear power delivery. Designed to meet Euro 3 emissions standards, it relies on sophisticated engine management and catalytic converters for compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol | |
Configuration | Inline‑5, DOHC, 20‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 81.0 mm × 77.0 mm | |
Power output | 191–200 kW (260–272 PS) | |
Torque | 350–380 Nm @ 2,400–5,200 rpm | |
Fuel system | Bosch Motronic 4.4 multi-point fuel injection | |
Emissions standard | Euro 3 | |
Compression ratio | 8.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Garrett GT2556V twin-scroll turbo | |
Timing system | Belt-driven camshafts | |
Oil type | SAE 0W-40 (Volvo VCC 95200312) | |
Dry weight | Approx. 165 kg |
The Volvo B 4204 T6 was used across Volvo's P2 platform with longitudinal mounting. This engine received minor updates during its production run, including revised turbocharger actuator specifications. All adaptations are documented in OEM technical bulletins.
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The B 4204 T6's primary long-term reliability risk is turbocharger wastegate actuator failure, particularly in units with aggressive driving history. While formal failure statistics are unavailable for this vintage, enthusiast club data and workshop reports consistently cite turbo issues, timing belt neglect, and fuel system faults as the most common causes for repair. Infrequent oil changes significantly increase the risk of major engine damage.
Analysis derived from Volvo technical bulletins (1999-2004) and aggregated data from Volvo enthusiast clubs and specialist workshops. Repair procedures should follow manufacturer guidelines where available.
The most common questions about engine codes, what they mean, how to find them and how this database works
The B 4204 T6 is renowned for its thrilling performance and robust five-cylinder character, making it fundamentally reliable if meticulously maintained. Its main vulnerability is the turbocharger wastegate actuator, which can fail prematurely. With strict adherence to oil change intervals and using the correct specification, these engines can run reliably for hundreds of thousands of kilometers.
The most frequent issues are turbocharger wastegate actuator failure, timing belt failure (from neglecting replacement intervals), fuel system faults (clogged injectors, sensor failures), and oil leaks from aged gaskets/seals. These are well-documented in vintage Volvo service literature and bulletins.
The B 4204 T6 engine was used in the high-performance Volvo S60 R (2002-2004), V70 R (2003-2004), and the flagship S80 (1999-2004). It was the pinnacle of Volvo's five-cylinder turbocharged engines before the introduction of the V8.
Aftermarket ECU tuning is common on the B-4204-T6 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Fuel economy is modest due to its performance nature. Expect figures around 12-15 L/100km (18-23 mpg UK) in mixed driving for a car like the S60 R. This can vary significantly based on driving style, boost levels, and vehicle condition.
Yes. The Volvo B 4204 T6 is an interference engine. If the timing belt fails, the pistons will contact the valves, causing severe internal engine damage. This makes strict adherence to the 60,000 km replacement interval absolutely critical.
For original specification, a high-quality full synthetic oil like SAE 0W-40 meeting Volvo VCC 95200312 standards is essential to protect the turbocharger and engine internals as per Service Bulletin #4204T6-01. Modern equivalents meeting ACEA A3/B4 are also suitable.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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