The Volvo B 4204 T21 is a 1,969 cc, inline‑four turbocharged petrol engine produced between 2014 and 2019. It features an aluminum block and head, dual overhead camshafts (DOHC), and direct fuel injection (Volvo VEA architecture). This unit delivered 140 kW (190 PS) and 300 Nm of torque, engineered for responsive performance and efficiency in Volvo’s compact executive models.
Fitted to models such as the S60, V60, and XC60 (Drive-E platform), the B 4204 T21 was designed for drivers seeking a balance of brisk acceleration, low-end torque, and refined cruising. Emissions compliance was achieved through a three-way catalyst and particulate filter, meeting Euro 6 standards across all markets.
One documented concern is potential software-related drivetrain disengagement under specific cold-start conditions, addressed in Volvo Technical Service Bulletin V‑17‑003. This issue, linked to the interaction between the engine control unit and transmission software, requires a software update for resolution. In 2019, Volvo began phasing in mild-hybrid variants of the Drive-E engines.
Production years 2014–2019 meet Euro 6 emissions standards (Swedish Transport Agency Type Approval #STV/B4204/2014).
The Volvo B 4204 T21 is a 1,969 cc inline‑four turbocharged petrol engine engineered for compact executive sedans, wagons, and SUVs (2014-2019). It combines direct fuel injection with a single-scroll turbocharger to deliver strong low-end torque and efficient performance. Designed to meet Euro 6 emissions standards, it balances responsive power delivery with modern fuel economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,969 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 82.0 mm × 93.2 mm | |
| Power output | 140 kW (190 PS) @ 5,000 rpm | |
| Torque | 300 Nm @ 1,800–4,800 rpm | |
| Fuel system | Direct injection (Bosch HDEV5) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single-scroll turbo (Mitsubishi Heavy Industries) | |
| Timing system | Chain-driven dual overhead camshafts | |
| Oil type | Volvo VCC 95200377 (SAE 0W-20) | |
| Dry weight | 130 kg |
The turbocharged design provides strong low-RPM torque ideal for urban and highway driving but requires strict adherence to 15,000 km oil change intervals to prevent carbon buildup and turbo degradation. Volvo VCC 0W-20 oil is critical for optimal variable valve timing (VVT) operation and chain lubrication. Direct injection leads to carbon accumulation on intake valves; cleaning every 60,000-80,000 km is recommended per Volvo TSB V-17-003. The engine is non-interference, providing a safety margin if the chain fails.
Oil Specs: Requires Volvo VCC 95200377 specification oil (SAE 0W-20) for optimal VVT and chain performance (Volvo TSB V-17-003).
Emissions: Euro 6 certification applies to all models in this production period (Swedish Transport Agency #STV/B4204/2014).
Power Ratings: Measured under SAE net standards. Output is consistent across all applications (Volvo Tech Spec 2014).
Volvo VEA Engine Technical Guide (2014)
Volvo Workshop Manual (2015)
Volvo Technical Service Bulletin V-17-003
Swedish Transport Agency Type Approval #STV/B4204/2014
The Volvo B 4204 T21 was used across Volvo's SPA/VEA platforms with transverse mounting. This engine received minor ECU and emissions revisions over its lifespan, but core components remain interchangeable. All adaptations are documented in OEM technical bulletins.
Locate the engine code on a label affixed to the timing cover or on the vehicle's VIN plate (Volvo Workshop Manual 2015). The code will read "B4204T21". Visual identification: Aluminum block and head, prominent "VOLVO ENGINE" casting on the plastic cam cover, and a single-scroll turbocharger on the exhaust manifold. Critical differentiation from B4154T: B4204T21 has a 2.0L displacement (82.0mm bore) vs 1.5L (75.0mm bore). Ancillary parts are generally consistent across model years; consult EPC for exact fitment.
The B 4204 T21's primary reliability consideration is a software-related drivetrain disengagement issue under cold-start conditions, addressed in Volvo TSB V-17-003. While not a mechanical failure, it can affect drivability and requires a dealer software update. The engine's core mechanical components, including the timing chain and turbocharger, are generally robust when maintained with the correct oil and service intervals.
Analysis derived from Volvo technical service bulletins (2014-2019) and historical workshop manual data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLVO B-4204-T21.
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Regulation (EC) No 715/2007
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