Vehicle
Buick Regal
Two unrelated cars, thirteen years apart, and the badge is all they share. The 2010-2020 Regal is an Opel Insignia with a different badge — same platform, same engines, same faults — which matters because the European Insignia population is enormous and the Buick one is not, so the Insignia's known faults are the better place to look. The 1997-2004 car is a GM W-body with the 3800 Series II V6, and its defining fault is its own: the plastic upper intake manifold cracks at the EGR port and puts coolant where it does not belong.
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Generations
-
Third generation (W-body) 1988–1996
The first front-drive Regal. Only its final model year is OBD-II, which is the whole of its overlap with what this site can read.
- Body styles
- Coupé · Sedan
- Platform
- GM W-body
- Engines
-
- 2.8 V6 — LB6 · petrol · 93 kW (125 hp) · LB6, early cars
- 3.1 V6 — LH0 · petrol · 244–251 Nm (180–185 lb-ft)
- 3.8 V6 — L27 · petrol · 125–153 kW (168–205 hp) · 3800 Series I and II, L27 and L36
- Transmissions
- 4-speed automatic
- Drivetrain
- Front-wheel drive
-
Fourth generation (W-body) 1997–2004
The 3800 Series II era, and the one where a coolant leak is a design fault rather than an event: the plastic upper intake manifold fails at the EGR port.
- Body styles
- Sedan
- Platform
- GM W-body
- Engines
-
- 3.8 V6 — petrol · 3800 Series II L36
- 3.8 supercharged V6 — petrol · 3800 Series II L67, the GS
- 2.5 V6 — LB8 · petrol · China
- 3.0 V6 — LW9 · petrol · China
- Transmissions
- 5-speed manual · 4-speed 4T60-E automatic · 4-speed 4T65-E automatic · 4-speed 4T65-E HD automatic
- Drivetrain
- Front-wheel drive
-
2nd 2010–2017
Insignia A underneath; 2.0 and 2.4 petrol, turbocharged at the top.
- Body styles
- Sedan
- Platform
- GM Epsilon II
- Engines
-
- 2.4 Ecotec — LE5 · petrol
- 2.0 turbo Ecotec — petrol · 162 kW (217 hp) · 350 Nm (258 lb-ft)
- 2.4 eAssist — LUK · mild hybrid · 136 kW (182 hp) · 233 Nm (172 lb-ft)
- 1.6 turbo — petrol · 132 kW (177 hp) · 220 Nm (162 lb-ft) · China
- 2.0 — petrol · 108 kW (145 hp) · 190 Nm (140 lb-ft) · China
- Transmissions
- 6-speed Hydra-Matic 6T40 automatic · 6-speed Hydra-Matic 6T50 automatic · 6-speed Hydra-Matic 6T70 automatic · 6-speed Aisin AF40 automatic · 6-speed Aisin F40 manual
- Drivetrain
- Front-wheel drive · Four-wheel drive
-
3rd 2017–2020
Insignia B underneath, sold as Sportback and TourX.
- Body styles
- Liftback · Estate
- Platform
- GM E2XX
- Engines
-
- 2.0 turbo — petrol · 174–192 kW (233–257 hp) · 350–353 Nm (258–260 lb-ft)
- 3.6 V6 — petrol · 231 kW (310 hp) · 382 Nm (282 lb-ft) · Regal GS
- 1.5 turbo — petrol · 125 kW (168 hp) · 252 Nm (186 lb-ft)
- 1.8 — petrol · 94 kW (126 hp) · 175 Nm (129 lb-ft)
- Transmissions
- 9-speed automatic · Aisin AWF8F45 8-speed automatic · CVT
- Drivetrain
- Front-wheel drive · Four-wheel drive
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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