Question 1

What does a EGR Valve do?

Accepted Answer

The valve controlling your EGR (exhaust gas recirculation) is an important part of your car's engine. It controls the amount of nitrogen oxide emitted into the atmosphere by petrol and diesel engines by recycling part of the exhaust gas back into the engine cylinders.

Question 2

How common is an EGR valve replacement?

Accepted Answer

With exhaust gases flowing through the component, it will eventually succumb to the deposits of carbon and hydrocarbons and it will ultimately seize. Replacing an EGR valve is an all too common repair.

Question 3

How does an EGR valve work and what are the components?

Accepted Answer

The EGR valve is connected to the exhaust system by a metal tube. When the engine is running, the valve will be opened by the engine management system to allow the exhaust gases to travel up the tube from the exhaust system and back through into the inlet manifold, and afterwards back into the engine.
The control of this valve is either driven directly by a solenoid on the EGR unit itself or via a hose to a solenoid on the vacuum circuit that is also opened by the engine management system.
Some EGR units have a cooler as part of them, that is plumbed into the engine’s cooling system, literally to cool the exhaust gasses before they go back through.
By the exhaust gasses going back into the engine, it reduces NOx (Nitrogen Oxide) content. This is because the exhaust gas reduces the actual oxygen proportion and increases the vapour content, which in return reduces the combustion temperature peak. As more NOx is produced as the temperature rises, this method actively reduces the amount created.

Question 4

What are the symptoms of a malfunctioning EGR Valve motor?

Accepted Answer

A rough idle when starting your vehicle or during brief stops (i.e. low engine speeds with a warmed-up engine) can be caused when the EGR is constantly open and a continuous flow of exhaust gases goes into the intake manifold. Poor performance can be caused when the valve is open or closed. The incorrect function of the EGR valve can cause the erratic performance of your vehicle.

Question 5

Smart

Accepted Answer

Smart is a German automotive brand, established 25 years ago in 1994.The company is a division of the automotive corporation Daimler AG and operated under the ownership of Mercedes-Benz.

Question 6

How popular is Smart in the United Kingdom?

Accepted Answer

Smart isnt’ the most popular brand in the UK, most likely due to appealing primarily to parking-challenged city-dwellers; there are only 96k of their vehicles on the roads of the UK today.Showing steady growth, however, since their introduction to the UK market in 2003, the trend would suggest that we’re likely to see more of these eccentric looking tiny cars as time goes by.

Question 7

Smart: Quirky little microcars and subcompacts

Accepted Answer

Owned by Mercedes-Benz, Smart cars fit into the market you’d expect on first glance. They’re a fun and funky little city car; they’re solid, middle of the road machines, designed to be as versatile as they look.A Smart car will never fool anyone that it’s a hi-end, luxury vehicle. There’s plenty of glossy plastic and groovy fabrics, yet in the cockpit, you’ll find up-to-the-minute touchscreen media options at the controls. They do come at an inflated price for the small city car market, but by nature of their unique design—there’s nothing quite like them.

Question 8

Smart cars are cheap to run—but not so cheap to buy

Accepted Answer

Your Smart ForFour will be more expensive by comparison than its rivals: the Fiat 500, Skoda Citigo, Kia Picanto or Hyundai i10—yet it’s rather hard to pitch the Fortwo against anything because there isn’t anything on the market quite so small. Only the Renault Twizy comes to mind, and that’s barely a car at all.Once you’ve got one though, your Smart car will cost next to nothing to run with their tiny wheels and low weight. The electric models perform even better with a fuel equivalent of 87mpg.

Question 9

Smart’s reliability and reputation

Accepted Answer

Smart didn’t feature as one of the brands in the What Car? Reliability Survey in 2018 that we’ve been using to draw comparisons of reliability against other marques—but checking the user reviews gathered by the AA it would appear that most owners have very few problems and that their reliability scores are generally high.

Question 10

Recent Smart recalls and reliability issues

Accepted Answer

Various recalls have been made on Smart models throughout their motoring history. The following are a list of the most recent in the UK and Europe.

Question 11

14/10/2017 – Smart ForTwo, Smart ForFour (2017)

Accepted Answer

The strength of the left front steering knuckle may be insufficient

Question 12

29/09/2017 – Smart ForTwo, Smart ForFour (2014–2015)

Accepted Answer

As a result of the weakening of the braking rope wrench adjustment knob, the hand brake lever travel could be prolonged gradually

Question 13

24/06/2016 – Smart ForFour (2014–2015)

Accepted Answer

The anchorage for the rear seat backrest may not be sufficiently resistant

Question 14

10/06/2016 – Smart ForTwo (2014–2015)

Accepted Answer

At high vehicle speed, combined with strong wind, the plastic front service hatch can detach from the vehicle and fall into traffic

Question 15

05/06/2015 – Smart ForTwo (2014)

Accepted Answer

The steering mechanism screws used for some vehicles may breakAll recall information sourced from gov.co.uk data.

Car make and model	Dealers average price	exclusive price	Instant savings
Smart Fourtwo 1.6 litres	£487.18	£392.89	19%
Smart Forfour 1.6 litres	£437.70	£377.33	14%
Smart Roadster 1.6 litres	£445.25	£377.33	15%
Smart Roadster-coupe 1.6 litres	£464.23	£396.78	15%
Smart City-coupe 1.6 litres	£441.48	£377.33	15%
Smart Cabrio 1.6 litres	£468.20	£396.78	15%
Smart Fourtwo 1.6 litres	£487.18	£392.89	19%
Smart Forfour 1.6 litres	£437.70	£377.33	14%
Smart Roadster 1.6 litres	£445.25	£377.33	15%
Smart Roadster-coupe 1.6 litres	£464.23	£396.78	15%
Smart City-coupe 1.6 litres	£441.48	£377.33	15%

Smart EGR valve replacement

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How much does EGR valve replacement cost for Smart?

How much does EGR valve replacement cost for Smart?

Our expert insights into Smart EGR valve replacement

Our expert insights into Smart EGR valve replacement

What does an EGR Valve motor do?

What are the symptoms of a malfunctioning EGR Valve motor?

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What happens when we do an EGR Valve Replacement replacement on your car?

What does an EGR Valve motor do?

What are the symptoms of a malfunctioning EGR Valve motor?

How much does it cost to fix my car?

What happens when we do an EGR Valve Replacement replacement on your car?

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